View source for User:ItsCrocoSwine/3DS Error toolkit

{{#approvable_by: users = ItsCrocoSwine}}<!-- this should be removed if moved out of userspace -->
=Key information=

This page lists possible causes and fixes of Luma3DS exception screens, ErrDisp screens, stock error codes, and bootROM errors. They are not applicable to every situation, but cover most common known issues.

In the following lists, the file prefixes on file paths refer to the starting location. <code>sd:/</code> refers to the SD card, and numbers in the format of <code>[X:]</code> refer to [[3DS:GodMode9|GodMode9's]] drive numbers.

If your '''ErrDisp''' displays one of the processes in the first table, you do not need to look up its error code in the second one. The solutions for these processes are almost always the same.

On both stock and custom firmware, apps can cause '''error codes''' if they run into a non-fatal issue.<br>
In the below tables, error codes are separated into sets by their section (e.g. 007-XXXX) and then sorted within their sets in ascending order by their result code (e.g. XXX-2001).

{{info|Not all 3DS error codes are known or understood, and it is unlikely all codes will ever be documented in full due to Nintendo failing to document many of them.}}

{{info|If the below fixes do not solve your issue or you are unsure of what to do, join the [https://discord.gg/nintendohomebrew Nintendo Homebrew Discord] for further assistance.}}

=Known errors=

----

<tabber>
|-|Arm9=

<span style="font-size:175%; display:flex; justify-content:center">Error On Boot</span>
{| class="wikitable" style="margin: auto"
! style="font-size:125%;" | Exception Type
! style="font-size:125%;" | Problem & Solution
|-
| rowspan="3" | Any
| Files on the SD are corrupted. 
:To fix, [[Checking_SD_card_integrity|verify that your SD card is not faulty.]] If it is verified working, make a backup of all intact files, [[Formatting_an_SD_card|format the SD card]], and try booting again.
|-
| A system save located on the NAND in <code>[1:]/data</code> has a problem.
|-
| System-unique files are missing from the NAND in <code>[1:]/rw/sys</code>.
|-
| rowspan="2" | data abort
| The <code>shared2</code> folder in <code>[2:] SYSNAND TWLN</code> is missing. 
:To fix, create this folder.
|-
| System titles have been deleted.
:To fix, perform a [[3DS:Safe Mode|Safe Mode update]].
::If this does not work, perform a [[3DS:CTRTransfer|CTRTransfer]].
|-
| rowspan="3" | prefetch abort (svcBreak)
| The system movable, <code>[1:]/private/movable.sed</code>, is 288 bytes but a flag is enabled that expects a size of 320 bytes. 
:To fix, boot into GodMode9 and select <code>SYSNAND CTRNAND</code>, then go into the <code>private</code> folder.<br>Inside this folder, you will see a file named <code>movable.sed</code>. Select it, and under the options menu, select '''Show in Hexeditor'''.<br>Green-colored numbers will appear in the middle of the screen - press {{B|A}} and then unlock '''writing to sysNAND (lvl2)'''.<br>At the beginning of the file, look for the set of numbers <code>53 45 45 44 00 01</code>. Once you find these numbers, hold {{B|A}} and press {{B|D-PAD DOWN}} while the <code>01</code> value is highlighted to change it to <code>00</code>. Press {{B|B}}, then {{B|A}}, then {{B|B}} to save changes and exit from the hexeditor, then press {{B|START}} to reboot your console.
|-
| <code>SYSNAND CTRNAND</code> has bad CMACs.
:To fix, press R+A on the <code>SYSNAND CTRNAND</code> drive and <code>Fix CMACs for drive</code>. The console will act like it has been formatted after this, and this is intended.
|-
| If none of the above fixes worked, perform a [[3DS:CTRTransfer/Manual|Manual CTRTransfer]].
|-
| prefetch abort (kernel panic)
| The console likely has a hardware issue.
|-
| undefined instruction
| The console likely has a hardware issue.
|}

<span style="font-size:175%; display:flex; justify-content:center">Error During Use</span>
{| class="wikitable" style="margin: auto"  
! style="font-size:125%;" | Exception Type
! style="font-size:125%;" | Problem & Solution
|-
| data abort
| Files on the SD are corrupted. 
:To fix, [[Checking_SD_card_integrity|verify that the SD card is not faulty.]] If it is verified working, make a backup of all intact files, [[Formatting_an_SD_card|format the SD card]], and try again.
|}

|-|Arm11=

<span style="font-size:175%; display:flex; justify-content:center">Error On Boot</span>
{| class="wikitable" style="margin: auto"
! style="font-size:125%;" | Current Process
! style="font-size:125%;" | Exception Type
! style="font-size:125%;" | Problem & Solution 
|-
| act || any
| Your NNID(s)' stored data is misconfigured or being interfered with.
: To fix, if [https://pretendo.network Pretendo] is installed, turn it off by disabling <code>Enable loading external FIRMs and modules</code> on [[3DS:Luma3DS/Configuration|the Luma configuration menu]]. 
:: If this does not help or Pretendo is not installed, then [[3DS:GodMode9/Usage#Restoring_a_NAND_backup|restore a NAND backup]] - especially if you recently tried to [[3DS:GodMode9/Usage#Removing_an_NNID_without_formatting_your_device|log out an NNID]].
|-
| boss || data abort
| The current firmware version is too old for SpotPass to work. Perform a [[3DS:Safe Mode|Safe Mode update]].
:If this does not work, you may require [[3DS:CTRTransfer|a CTRTransfer.]]
|-
| camera || any
| Potential hardware issues, or an instance of ShutTheCamUp is crashing.
: Look for and delete <code>/luma/sysmodules/0004013000001602.ips</code> and <code>/luma/titles/0004013000001602/code.ips</code>.
:: If this fixed the issue, then [[3dsguide:restoring-updating-cfw|update Luma3DS]] and reinstall the correct Old or New 3DS patch for [[udb:3ds/shut-the-cam-up|ShutTheCamUp]] if you wish to continue using it.
:: If these don't exist, or the error occurs when booting without an SD card, it's likely hardware issues. Join the [https://discord.gg/nintendohomebrew Nintendo Homebrew Discord] and ask, in English, for help.
|-
| cfg || any
| Either the NAND [[3dbrew:Config Savegame|config savegame]] or part of your console-unique file(s) is damaged.
: To fix, first boot into GodMode9, press R+A while the cursor is on the folder <code>[1:]/data/<ID0>/sysdata/00010017</code>, choose to <code>Copy to 0:/gm9/out</code>, then delete the folder. After rebooting, the console will enter initial setup again; this is intended and not an issue.
:: If this does not help, delete the newly created <code>00010017</code> and copy the backup into its place, run [[3DS:ctrcheck]], and replace any console-unique files marked as invalid or missing with the copies from the <code>essentials.exefs</code> backup inside <code>[S:] SYSNAND VIRTUAL</code> in GodMode9.
|-
| fs || any 
| Can be anything from SD card problems to hardware issues.
: [[wikipedia:Fault isolation|Fault isolation]] will likely be required to find the true cause of this error. Start by doing [[3DS:ctrcheck|ctrcheck]] and trying to trigger the error with the SD card removed from the console.<br>If the error stops when the SD card is removed, [[Formatting an SD card|reformat the SD card]], and if that doesn't help, [[Checking SD card integrity|test it for hardware damage]].
|-
| hid || any
| Potential hardware problems, or an instance of rehid is crashing.
: First look for and delete <code>/luma/titles/0004013000001D02</code>, <code>/luma/titles/0004013000003302</code>, <code>/luma/sysmodules/0004013000001D02.cxi</code> and <code>/luma/sysmodules/0004013000003302.ips</code>.
:: If this fixed the issue, then [[3dsguide:restoring-updating-cfw|update Luma3DS]] and reinstall the latest release of [[3DS:Rehid|rehid]] to continue using it.
:: If these don't exist, or rehid has never been installed on this console, it's likely hardware issues. [[3DS:Hardware test|3ds_hw_test]] or [[3DS:ctrcheck|ctrcheck]] may help with fault isolation.
|-
| i2c, gsp, mcu, pxi, spi || any
| The console has a serious hardware issue that likely is not easily fixable.
:Run [[3DS:Hardware test|3ds_hw_test]]. 
::If the test returns zero errors detected, join [https://discord.gg/C29hYvh the Nintendo Homebrew Discord] and ask, in English, for help.
|-
| mset || any
| System Settings is broken in some way - this may indicate that the console has a hardware issue.
:To fix, perform a [[3DS:CTRTransfer|CTRTransfer]], or a [[3DS:CTRTransfer/Manual|Manual CTRTransfer]] if that does not work.
::If neither of these work, the console has a serious issue. Join the [https://discord.gg/C29hYvh Nintendo Homebrew Discord] and ask, in English, for help.
|-
| rowspan="6" | menu
| rowspan="3" | data abort
| Broken HOME Menu theme.
:To fix, go into the folder <code>sd:/Nintendo 3DS/<ID0>/<ID1>/extdata/00000000/</code> and delete the folder matching your region, one of the following:
::USA: <code>000002cd</code><br>EUR: <code>000002ce</code><br>JPN: <code>000002cc</code>
|-
| Broken HOME Menu extra data.
:To fix, go into the folder <code>sd:/Nintendo 3DS/<ID0>/<ID1>/extdata/00000000/</code> and delete the folder matching your region, one of the following:
::USA: <code>0000008f</code><br>EUR: <code>00000098</code><br>JPN: <code>00000082</code><br>KOR: <code>000000A9</code>
|-
| Broken HOME Menu application.
:To fix, either perform a [[3DS:Safe Mode|Safe Mode update]], attempt to enter System Settings before the crash occurs and delete the application in Data Management, or [[Formatting an SD card|reformat the SD card]].
|-
| prefetch abort
| An installation of Menuhax is conflicting with the custom firmware.
:To fix, follow the directions [[3DS:Troubleshooting/removing_menuhax67|on this page]].
::If this occurs on boot, set '''Hbmenu autoboot''' in the [[3DS:Luma3DS/Configuration|Luma configuration menu]] to 3DS, then follow the above instructions and turn '''Hbmenu autoboot''' back off once it has been removed.
:::Ensure in <code>sd:/luma/config.ini</code> that hbldr_3dsx_titleid is set to 000400000d921e00 and <code>boot.3dsx</code> is in the root.
|-
| rowspan="2" | prefetch abort (svcBreak)
| If <code>R5</code> contains <code>D900458B</code>: The <code>f000000b</code> folder in <code>SYSNAND CTRNAND</code> is broken, its exact location being at <code>[1:]/data/<ID0>/extdata/00048000/f000000b</code>.
:To fix, backup <code>f000000b</code> by pressing R+A while highlighting it, then selecting <code>Copy to 0:/gm9/out</code>. Once it is backed up, delete the folder. If this does not fix the issue, copy the folder back where it was.
|-
| System titles are missing. Perform a [[3DS:Safe Mode|Safe Mode update]].
: If you have a recent NAND backup, you could try restoring it instead with [[3DS:GodMode9/Usage#Restoring_a_NAND_backup|this guide]]
|-
| ns || prefetch abort (svcBreak)
| The [[3DS:Luma3DS/Configuration|Luma configuration]] setting '''Hbmenu autoboot''' is set to boot to a title that does not exist.
:To fix, disable the option, install an application with the title ID in <code>sd:/luma/config.ini</code>, or change the set title ID to match an application that does exist.
|-
| nwm || any
| The WiFi chipset's hardware is damaged or dead.
:To fix, replace the WiFi chipset with a new one. To avoid the error until then, disable WiFi on the 3DS and do not turn it back on.
::If the 3DS is an old model, you can disable WiFi using an external switch. New models do not have this switch disable it through the HOME Menu Settings or Rosalina. Repeatedly pressing the keycombo for Rosalina while powering on might let you access Rosalina before it can crash.
|-
| pm || undefined instruction
| The installed version of Luma3DS likely does not support the current firmware version. This is guaranteed to be true if the contents of R0 are <code>E0E01BF5</code>.
:To fix, [[3dsguide:restoring-updating-cfw|update CFW.]]
|-
|}

<span style="font-size:175%; display:flex; justify-content:center">Error During Use</span>
{| class="wikitable" style="margin: auto"
! style="font-size:125%;" | Current Process
! style="font-size:125%;" | Exception Type
! style="font-size:125%;" | Problem & Solution
|-
| 3dsx_app || any
| The <code>.3dsx</code> file that was most recently opened is corrupted.
:To fix, download a new copy of the <code>.3dsx</code> file. If this error happens when opening the Homebrew Launcher, download a new copy of <code>boot.3dsx</code>.
::If the error still happens, [[Checking SD card integrity|test the SD card for errors.]]
|-
| rowspan=2 | app<br>CtrApp
| prefetch abort (svcbreak)
| The app most recently opened is out-of-region and relies on locale-specific data. Activate [[3DS:SGL|locale emulation]] for it.
|-
| any other process
| The app most recently opened is trying to use broken software.
:To fix, disable all game mods, cheat codes, and plugins to ensure they are not the cause. 
::If the error still happens, then the game itself is likely faulty. If it is a system app, [[3DS:CTRTransfer|perform a CTRTransfer]]. Otherwise, if it is a [[3DS:Dump titles and game cartridges#Dumping a Game Cartridge|cartridge dump]], redump it, if it is an eShop game, click the Repair button at the bottom of its eShop page or delete and reinstall it, or if it is a cartridge, clean the cartridge and the 3DS cartridge reader with isopropyl alcohol.
|-
| GARDEN || any
| Animal Crossing's game data or savedata is having issues.
:To fix, disable all game mods, cheat codes, and plugins to ensure they are not the cause. If the error still happens, then the game itself may be faulty. If it is a [[3DS:Dump titles and game cartridges#Dumping a Game Cartridge|cartridge dump]], redump it, if it is an eShop game, click the Repair button at the bottom of its eShop page or delete and reinstall it, or if it is a cartridge, clean the cartridge and the 3DS cartridge reader with isopropyl alcohol.
::If the error yet still happens, ensure that you have not used a save editor before the error started happening. If you have used a save editor, the edits are broken and you will need to restore a backed-up save, or wipe the save and start over if you have no backup.
|-
| fs || any 
| Can be anything from SD card problems to hardware issues.
: [[wikipedia:Fault isolation|fault isolation]] will likely be required to find the true cause of this error. Start by doing [[3DS:ctrcheck|ctrcheck]] and trying to trigger the error with the SD card removed from the console.<br>If the error stops when the SD card is removed, [[Formatting an SD card|reformat the SD card]], and if that doesn't help, [[Checking SD card integrity|test it for hardware damage]].
|-
| Kujira<br>Joker<br>niji_loc || any
| The app most recently opened has an issue of some kind.
:To fix, disable all game mods, cheat codes, and plugins to ensure they are not the cause. If the error still happens, ensure the game is the same region as the console - if it is not, [[3DS:SGL|activate locale emulation for the game.]]
::If the error yet still happens, then the game itself is likely faulty. If it is a [[3DS:Dump titles and game cartridges#Dumping a Game Cartridge|cartridge dump]], redump it. If it is an eShop game, click the Repair button at the bottom of its eShop page or delete and reinstall it. If it is a cartridge, clean the cartridge and the 3DS cartridge reader with isopropyl alcohol.
|-
| rowspan="2" | loader 
| undefined instruction
| The app most recently opened has an issue. R0 is (most likely) an error code. Here are some common values for R0:
: <code>D9004587</code>: When trying to open a game: The game is corrupted, or it's seed is not imported.
:: See: [[3DS:Fixing corrupted games]]
: <code>C8804478</code>: If trying to open the Homebrew Launcher: <code>boot.3dsx</code> is missing from the root of your SD card.
:: To fix: Download the latest Homebrew Launcher from [https://github.com/devkitPro/3ds-hbmenu/releases/latest here]
: <code>D96077FA</code>/<code>FFFFFFFF</code>: The <code>.3dsx</code> that Luma3DS tried to load is corrupted.
:: To fix, redownload the app you are trying to launch. If this happens when you try open the Homebrew Launcher itself, see the error above.
: Most of the other possible error codes for this are listed on [[3DS:Error_screens/Luma3DS_ErrDisp|this page]].
|-
| prefetch abort (svcBreak)
| The LayeredFS or sysmodule patch Luma3DS tried to load is invalid or corrupt.
: To fix: Re-download any recently installed patches (eg. Nimbus (Pretendo), Wumiibo, or anything else that goes in <code>/luma/titles</code> or <code>/luma/sysmodules</code>.) Alternatively, you may disable <code>loading external FIRMs and modules</code> as well as <code>Enable game patching</code> in the [[3DS:Luma3DS/Configuration|Luma3DS configuration menu]].
|-
| mset || any
| System Settings is broken in some way - this may indicate that the console has a hardware issue.
:To fix, perform a [[3DS:CTRTransfer|CTRTransfer]], or a [[3DS:CTRTransfer/Manual|Manual CTRTransfer]] if that does not work.
::If neither of these work, the console has a serious issue. Join the [https://discord.gg/nintendohomebrew Nintendo Homebrew Discord] and ask, in English, for help.
|-
| nwm || any
| The WiFi chipset's hardware is damaged or dead.
:To fix, replace the WiFi chipset with a new one. To avoid the error until then, disable WiFi on the 3DS and do not turn it back on.
::If the 3DS is an old model, you can disable WiFi with an external switch. New models must instead disable it through the HOME Menu Settings or Rosalina. Repeatedly pressing the keycombo for Rosalina while powering on might let you access Rosalina before it can crash.
|-
| pxi || any
| Could be anything from a faulty cartridge to damaged internal components, but will almost always be some type of hardware issue.
|-
| qtm<br>cam || any
| The camera's hardware is damaged or dead.
:To fix, replace the camera with a new one. To avoid the error until then, disconnect the camera or avoid using anything that activates the camera.
|-
| swkbd || any
|  The software keyboard is broken in some way - this may indicate that the console has a hardware issue.
: To fix, perform a [[3DS:CTRTransfer|CTRTransfer]], or a [[3DS:CTRTransfer/Manual|Manual CTRTransfer]] if that does not work.
:: If neither of these work, the console has a serious issue. Join the [https://discord.gg/nintendohomebrew Nintendo Homebrew Discord] and ask, in English, for help.
|-
|}

|-|ErrDisp=

<span style="font-size:175%; display:flex; justify-content:center">ErrDisp</span>
{| class="wikitable" style="margin: auto"
! style="font-size:125%;" | Process Name
! style="font-size:125%;" | Problem & Solution
|-
| process: '''cam'''<br>process: '''qtm'''
| Your camera's hardware is damaged or dead.
:If the error code is <code>0xF96183FE</code>, you can open <code>sd:/luma/config.ini</code> and set the variable <code>enable_safe_firm_rosalina</code> to 1 to bypass this error. 
:Otherwise, to fix, replace the camera with a new one. To avoid the error until then or if you cannot get a new camera, disconnect the camera.
|-
| process: '''kernel'''
| Your system software is having a strange issue.
:To fix, diagnose further by reading the contents of the file <code>sd:/luma/errdisp.txt</code>. If you do not understand this file, join the [https://discord.gg/nintendohomebrew Nintendo Homebrew Discord] and explain your issue there.
|-
| process: '''nwm'''
| Your WiFi chipset's hardware is damaged or dead.
:To fix, replace the WiFi chipset with a new one. To avoid this error until then or if you cannot get a new chipset, disable WiFi on the 3DS and do not turn it back on.
:If your 3DS is an old model, you can disable WiFi with an external switch. New models must instead disable it through the HOME Menu Settings or Rosalina. Repeatedly pressing the keycombo for Rosalina while powering on may allow you to access Rosalina before it can crash.
|-
| process: '''mcu'''
| Something related to power or the battery is having issues.
:To fix, check if your charger repeatedly disconnects and reconnects while it is inserted. If this is the case, you have a faulty charger port and need to replace it.
:If this is not the case, you have a deeper hardware issue that may not be fixable.
|}

{{info|In the following table, when <code>?</code> is in an error code, it is a wildcard.<br>This means any character can be in its position and the error code will remain the same.}}
{| class="wikitable" style="margin: auto"
! style="font-size:125%;" | Error Code
! style="font-size:125%;" | Problem & Solution
|-
| card removed
| Your SD card is faulty, or debris is interfering with its connection to the 3DS.
:To fix, clean the SD card and the SD reader in the 3DS with isopropyl alcohol. If this does not work, [[Checking SD card integrity|test the SD card for errors]].
|-
|0xC8A11BEF
|Occurs when attempting to use DLP services with an out-of-region game. This issue is not fixable currently.
|-
| 0xC86044D2
| Your NAND does not have enough free space available.
:To fix, join the [https://discord.gg/nintendohomebrew Nintendo Homebrew Discord] and explain your issue in detail. Deleting files from the NAND without guidance is likely to cause additional issues.
|-
| 0xC8804478
| The app you tried to open or system software it relies on is missing.
:If this occurs when you open any DS game or DS Download Play, follow [[3DS:TWLFix|TWLFix]].
:If this occurs after doing a manual CTRTransfer, Lazarus3DS, or the nim module errors, check in GodMode9 whether the file path <code>1:/private/movable.sed</code> exists. If it does not, you will need to manually restore <code>movable.sed</code> from a backup. Join the [https://discord.gg/nintendohomebrew Nintendo Homebrew Discord] and ask for help with this.
|-
| 0xC8804464<br>0xC8804471<br>0xC8804497<br>0xC88044A?
| Some dependency of the app you are trying to open does not exist.
:Ensure your SD is inserted, especially if the code is C88044AB specifically. If it is, ensure you have all of the necessary files for what you are trying to do.<br>If you do have the files and it is happening to a digital title, [[3DS:Safe Mode|do a Safe Mode update.]]<br>If you do have the files and it is happening to a cartridge, either your 3DS or the cartridge likely has a hardware issue.
|-
| 0xC8A04573
| Your SD card is formatted strangely.
:To fix, [[Formatting an SD card|reformat the SD card.]] If this does not work, [[Checking SD card integrity|test the SD card for errors.]]
|-
| 0xC8A0802B
| If this happened while installing an application, your <code>title.db</code> does not exist or is corrupted.
:To fix, follow one of the two following sets of instructions. The second one will delete all installed games/apps as a side effect, but is significantly faster and simpler.
:#[[3DS:Rebuild Title Database|rebuild <code>title.db</code>]] and then try again.
:#Open GodMode9, go into the file path <code>1:/dbs/</code> and delete any existing <code>title.db</code>, then press {{B|R}}+{{B|Y}}, choose '''Create a dummy file''', and name this file <code>title.db</code> - leave the file size at 0. Once the file is created, press {{B|START}} to reboot, go into System Settings -> Data Management -> Nintendo 3DS -> Software, and choose '''Yes''' if a prompt about management information appears.

|-
| 0xC92044EB<br>0xC92044FA<br>0xC960454?
| Your SD card is set to read-only or is faulty.
:To fix, make sure the slider on the left side of the SD card is pushed up, use a different SD adapter if you are currently using one, and [[Checking SD card integrity|test the SD for errors]] if it is not read-only.
:If the error is happening when launching a cartridge, especially if the error code is 0xC960454?, delete any updates or DLC to see if the cartridge works as they could be corrupt or faulty. If this succeeds, reinstall them from eShop and ensure the cartridge still works.
:If the error still happens, the SD card is likely faulty. If it is also read-only, it has permanently protected itself to prevent data corruption. Either way, back up its contents and get a new SD.
|-
| 0xD8E0806A
| You have developer UNITINFO enabled and are trying to install a retail game.
:To fix, go into the file <code>sd:/luma/config.ini</code> and set the variable <code>use_dev_unitinfo</code> to 0.
|-
| 0xD860446?
| You are attempting to use more processing power than the console currently has available.
:To fix, ensure you are not using a mod that is designed for an emulator rather than native hardware. If you are using such a mod, either toggle off any "Extra RAM" setting or use a different mod.
|-
| 0xD900458?
| The app you tried to open, its savedata, or an update file for it is corrupted.
:To fix, if it is a [[3DS:Dump titles and game cartridges#Dumping a Game Cartridge|cartridge dump]], redump it. If it is an eShop game, click the Repair button at the bottom of its eShop page or delete and reinstall it. If it is a cartridge, clean the cartridge and the 3DS cartridge reader with isopropyl alcohol.
|-
| {{anchor|0xF9605002}}0xF9605002
| If attempting to use any camera features, your camera hardware is damaged or dead.
|}

|-|Error codes=
<span style="font-size:175%; display:flex; justify-content:center">Error Codes</span>
{| class="wikitable" style="margin:auto;"
|-
! colspan="3" |<span id="001"><h3>001 - Online Services</h3></span>
|-
|0102
|Unexpected disconnection from network services.
|[https://en-americas-support.nintendo.com/app/answers/detail/a%20id/17043 Nintendo Support Page]
|-
|0112
|Unable to connect to the server.
|
|-
|0302
|Unable to connect to the server.
|
|-
|0502
|Cannot connect to online services, or unexpectedly disconnected from them. 
|
|-
|0718
|The Friends List is already full.
|
|-
|0720
|Generic error code.
|
|-
|0721
|Online access is restricted by Parental Controls.
|
|-
|0724
|Your Personal Mii is missing.
|
|-
|0725
|Your ability to register friends is restricted by Parental Controls. 
|
|-
|0726
|Your notification settings for the Friends List are not yet configured.
|
|-
|0803
|Cannot connect to authentication servers. 
|[https://www.nintendo.co.jp/netinfo/en_US/index.html Server Status and Maintenance]
|-
|0811
|Online play servers under maintenance.
|[https://www.nintendo.co.jp/netinfo/en_US/index.html Server Status and Maintenance]
|-
! colspan="3" |<span id="002"><h3> 002 - Account Related Errors</h3></span>
|-
| 0100
|The online service is unavailable.
|
|-
|0101
|Network has high traffic or is down.
|
|-
|0102
|Account permanently banned.
|
|-
|0107
|Account temporarily banned.
|
|-
|0109
|Possible corrupted data.
|
|-
|0110
|YouTube for the 3DS has been discontinued.
|
|-
|0111 
|The online service is unavailable.
|
|-
|0119
|Friend module outdated, system update required.
|
|-
|0120
|This game/title is outdated, and must be updated before use.
|
|-
|0121
|Invalid LocalFriendCodeSeed SEED signature - the file is possibly modified.
|
|-
| 0123
|Account is permanently banned.
|
|-
|3503
|Service under maintenance.
|
|-
|34xx
|Server returned a 4xx HTTP error.
|[https://www.nintendo.co.jp/netinfo/en_US/index.html Server Status and Maintenance]
|-
|35xx
|Server returned a 5xx HTTP error.
|[https://www.nintendo.co.jp/netinfo/en_US/index.html Server Status and Maintenance]
|-
! colspan="3" |<span id="003"><h3>003 - Network Connection Errors</h3></span>
|-
|0200
|Wireless connections are disabled.
|
|-
|0299
|Wireless connections are disabled. 
|
|-
|0300
|The EULA for your region has not been accepted.
|
|-
|0399
|The accepted EULA version is too low.
|
|-
|0400
|Your ability to do this is restricted by Parental Controls.
|
|-
|1000
|No Access Point found.
|
|-
|1004
|No Access Point found with USB Connector.
|
|-
|1099 
|Could not find an Access Point with the entered SSID.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4249/kw/003-1099 Nintendo Support Page]
|-
|1100
|The encryption key is incorrect.
|
|-
|1101
|Access Point password incorrect or it has a incompatible configuration.
|
|-
|1102
|Unable to connect to Access Point due to incorrect Security Setting.
|
|-
|1104
|Unable to connect to Access Point with USB Connector.
|
|-
|1200
|Connection refused, as it would give this device the same IP address as another device in the network.
|
|-
|1300
|Incorrect Access Point configuration.
|
|-
|1400
|Incorrect security key.
|
|-
|1402 
|Unable to connect to the internet with this Access Point.
|
|-
|2000
|Incorrect security key or DNS.
|
|-
|2001
|DNS resolution error. If you are using a custom DNS server, recheck its settings.
|
|-
|2100
|Network may be busy or have other connection problems.
|
|-
|2200
|Unable to connect to the Proxy Server.
|
|-
|3000
|There was an issue with authentication.
|
|-
|3305
|This service is not available in your location.
|
|-
|3405
|Generic communication error.
|
|-
|4000
|Generic communication error.
|
|-
|4100
|Generic communication error.
|
|-
! colspan="3" | <span id="005"><h3>005 - Network Installation Management</h3></span>
|-
|2008
|eShop download failed or the title's ticket is invalid. Delete the ticket in FBI and install it from a legitimate source like the eShop or (if it's a cart dump) from the game's cartridge.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/41692 Nintendo Support Page]
|
|-
|2037
|The server is undergoing maintenance.
|
|
|-
|2038
|A system update is required to use this service.
|
|
|-
|2043
|A system update is required to use this service.
|
|
|-
|2056
|Not enough space on the SD Card.
|
|
|-
|2061
|Unable to access the SD Card.
|
|
|-
|2062
|Not enough space in the System Memory.
|
|
|-
|2068
|The server is undergoing maintenance.
|
|
|-
|2069
|The software is corrupted.
|
|
|-
|4017
|This activation code is not recognized.
|
|
|-
|4040
|eShop connection timeout.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4429 Nintendo Support Page]
|-
|4069
|eShop is unavailable. If the issue persists, the SD might need to be replaced.
| [https://en-americas-support.nintendo.com/app/answers/detail/a_id/14413 Nintendo Support Page]
|-
|4240
|Cannot connect to eShop servers.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/28399 Nintendo Support Page]
|-
|4305
|Generic connection timeout error, could also mean that you are unable to download software from the eShop. 
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4346 Nintendo Support Page]
|-
|4320
|Generic error, only displays when formatting the console or performing a system transfer.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/48382 Nintendo Support Page]
|-
|5403
|Transfers are currently prohibited.
|
|-
|5404
|The transfer limit has been reached.
|
|-
|5542
|Maximum Funds reached.
|
|-
|5546
|Unable to purchase more items.
|
|-
|5568
|This activation code cannot be used with your account.
|
|-
|5593
|Unable to transfer specific software.
|
|-
|5602
|eShop title(s) from another region are linked to this console. This is caused by a region change.
|
|-
|5644
|Unable to use this credit card with this specific system.
|
|-
|5670
|You are unable to view your account's activity at this time.
|
|-
|5687
|Generic eShop connection issue error.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/26251/ Nintendo Support Page]
|-
|5704 
| Generic eShop connection issue error.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/26252 Nintendo Support Page]
|-
|5804
|This number has expired.
|
|-
|5811
|This activation code has expired.
|
|-
|5815
|This activation code has already been used.
|
|-
|5941
|The entered login details are incorrect.
|
|-
|5942
|Name was not registered due to a connection error.
|
|-
|5948
|Your eShop funds are already over the maximum value.
|
|-
|5958
|Unknown eShop error, usually seen on region-changed consoles.
|
|-
|5964
|Your NNID is banned from accessing the eShop. Contact Nintendo Support if this is a mistake.
|
|-
|5989
|You cannot link your Club Nintendo account to more than eight Nintendo 3DS systems.
|
|-
|6402
|The entered login details are incorrect.
|
|-
|6403
|Unable to register the entered username.
|
|-
|6499
|The Club Nintendo servers are undergoing maintenance, so your name couldn't be registered.
|
|-
|6501
|This credit card cannot be used.
|
|-
|6503
|The entered credit card number is incorrect.
|
|-
|6504
|You must enter the three-digit security code.
|
|-
|6507
|The entered credit card details are incorrect.
|
|-
|6511
|This credit card cannot be used.
|
|-
|6514
|The entered expiry date for this credit card is incorrect.
|
|-
|6519
|The entered address does not match the credit card's billing address.
|
|-
|7545
|eShop is unavailable. If the issue persists, the SD might need to be replaced.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/14413 Nintendo Support Page]
|-
|7550
|eShop is unavailable. If the issue persists, the SD might need to be replaced.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/14413 Nintendo Support Page]
|-
|8025
|eShop is unavailable. If the issue persists, the SD might need to be replaced.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/14413 Nintendo Support Page]
|-
|8026
|eShop is unavailable. If the issue persists, the SD might need to be replaced.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/14413 Nintendo Support Page]
|-
|8029
|eShop is unavailable. If the issue persists, the SD might need to be replaced.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/14413 Nintendo Support Page]
|-
! colspan="3" |<span id="006"><h3>006 - Matchmaking Errors</h3></span>
|-
|0112
|Issue connecting with Pokémon Bank.
|[https://en-americas-support.nintendo.com/app/answers/detail/a%20id/4203/ Nintendo Support Page]
|-
|0302
|Unable to connect to the server.
|
|-
|0311
|Unable to connect to the server.
|
|-
|0329
|The server is undergoing maintenance.
|
|-
|0332
|Closed ports while attempting matchmaking.
|
|-
|0347
|This online service is discontinued.
|
|-
|0501
|May indicate that the network is blocking traffic necessary for Online Play.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4204 Nintendo Support Page]
|-
|0502
|May indicate that the network is blocking traffic necessary for Online Play.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4204 Nintendo Support Page]
|-
|0520
|Unable to connect to the Internet.
|
|-
|0612
| Network is not optimal for peer-to-peer connections, possibly due to your network's NAT type.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/25881 Nintendo Support Page]
|-
|0617
|Generic error message.
|
|-
|0620
|Generic communication error.
|
|-
|0623
|Unable to connect due to outdated software.
|
|-
|0721
|Your ability to do online interactions is restricted by Parental Controls.
|
|-
|0800
|Unable to connect to authentication servers during the matchmaking process.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4328/ Nintendo Support Page]
|-
|0811
|Service unavailable due to maintenance. 
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/25910/ Nintendo Support Page]
|-
|0817
|This online service is discontinued.
|
|-
|0899
|Unable to connect to authentication servers during the matchmaking process.
| [https://en-americas-support.nintendo.com/app/answers/detail/a_id/4328/ Nintendo Support Page]
|-
! colspan="3" |<span id="007"><h3>007 - eShop API Errors</h3></span>
|-
|0200
|Could not access the SD Card.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4234 Nintendo Support Page]
|-
|1221
|The used download code is only redeemable in its relevant software, not in the eShop.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/14600 Nintendo Support Page]
|-
|2001
|Error when attempting to access the eShop with a region-changed console. Change back to the original region or restore a NAND backup made before the change to fix.
|
|-
|2100 
|Connection to eShop timed out, often caused by slow download times.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4432 Nintendo Support Page]or [https://support.nintendo.com/networkstatus Server Status and Maintenance]
|-
|2640
|Cannot connect to eShop/CDN servers.
|[https://support.nintendo.com/networkstatus Server Status and Maintenance]
|-
| 2670 
|Error while attempting to connect.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4383 Nintendo Support Page]
|-
|2705
|Cannot connect to Nintendo servers.
|[https://support.nintendo.com/networkstatus Server Status and Maintenance]
|-
|2720 
|eShop SSL error.
|
|-
|2913
| The server is probably down. Try again later.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/10425 Nintendo Support Page]
|-
|2916
|Unknown cause, typically displayed when attempting to download a title from the eShop.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/6557 Nintendo Support Page]
|-
|2920 
|eShop download failed or invalid title ticket. Delete the ticket in FBI and install it from a legitimate source like the eShop or (if it's a cart dump) from the game's cartridge.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/41692 Nintendo Support Page]
|-
|2924
|The language or region setting in your profile (not the same as the console's region) is not supported by the eShop.
|
|-
|3049
|The eShop is currently under maintenance.
|[https://support.nintendo.com/networkstatus/ Server Status and Maintenance]
|-
|6106
|Occurs when attempting to re-download software from the eShop with an invalid or fake ticket active.
|
|-
! colspan="3" |<span id="009"><h3>009 - eShop Application</h3></span>
|-
|1000
|A system update required. Check [[3DS:Is it safe to update?]] 
|
|-
|1001
|The eShop is currently under maintenance.
|[https://support.nintendo.com/networkstatus/ Server Status and Maintenance]
|-
|1002
|This service cannot be used in your region.
|
|-
|1003
|The system's country setting and the eShop's country setting do not match.
|
|-
|1004
|The content of this code has already been acquired.
|
|-
|1006
|The selected downloadable items cannot be purchased together.
|
|-
|1100
|The Add Funds function is not available in your selected region.
|
|-
|1200
|This Activation Code has already been used.
|
|-
|1201
|The entered code is not recognized.
|
|-
|1202
|The entered activation code is not recognized.
|
|-
|1203
|This card is not valid on 3DS Systems.
|
|-
|1205
|This activation code is not valid in your region.
|
|-
|1206
|This code cannot be used here.
|
|-
|1299
|The entered number is invalid.
|
|-
|1302
|Failed to enter the correct PIN.
|
|-
|1303
|Failed to authenticate the stored credit card's information. The information has been deleted.
|
|-
|1304
|The entered credit card cannot be used.
|
|-
|1305
|Credit card payments cannot be accepted at this time.
|
|-
|1313
|The entered address is incorrect.
|
|-
|1350
|The entered value exceeds your balance limit.
|
|-
|1351
|The balance limit has been reached.
|
|-
|2001
|Error when attempting to access the eShop with a region-changed console. Change back to the original region or restore a NAND backup made before the change to fix.
|
|-
|2410
|This service has been discontinued.
|
|-
|2705
|Often caused by network timing out or losing connection with the eShop.
|[https://en-americas-support.nintendo.com/app/answers/detail/a%20id/17014 Nintendo Support Page]
|-
|2913
|eShop or in-game DLC failed to download (or the server is down).
|[https://en-americas-support.nintendo.com/app/answers/detail/a%20id/7243 Nintendo Support Page] 
|-
|2916
|Unknown cause, typically displayed when attempting to download a title from the eShop.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/6557 Nintendo Support Page]
|-
|2920
|eShop download failed or invalid title ticket. Delete the ticket in FBI and install it from a legitimate source like the eShop or (if it's a cart dump) from the game's cartridge.
| [https://en-americas-support.nintendo.com/app/answers/detail/a_id/41692 Nintendo Support Page]
|-
|2923
|Unable to use a function that requires Internet Services.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/17014 Nintendo Support Site]
|-
|2924
|Your language or region setting (not console region) is not supported by the eShop.
|
|-
|2995
|The used download code is incorrect, not yet activated, expired, entered in the wrong place, or only usable in a different region.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/13515 Nintendo Support Site]
|-
|2996
|The item from the entered code is not currently being distributed.
|
|-
|4100
|The SD Card's data limit has been reached.
|
|-
|4072
|The SD Card may not be inserted.
|
|-
|4074
|Could not access the SD Card.
|
|-
|4075
|The SD Card's software management data is corrupted.
|
|-
|4077
|Download refused due to insufficient space on the SD Card.
|
|-
|4079
|Unable to access the SD Card. 
|
|-
|4998
|The local version of this content is newer than the version you are trying to download. Unknown what causes this.
|
|-
|6106
|An AM error occurred in NIM. Likely a bad ticket.
|
|-
|8001
|Authentication failed.
|
|-
|8002
|The service has expired.
|
|-
|8101
|The save data is unusable, as DLC required for it is missing.
|
|-
|8102
|Not enough free space to complete this process.
|
|-
|8111
|The DLC is corrupted.
|
|-
|8201
|Your access to the eShop is restricted by Parental Controls.
|
|-
|8301
|The 3DS User Agreement has to be accepted.
|
|-
|8401
|Corrupted update data. Delete it and reinstall.
|
|-
|9001
|The download was stopped due to low battery.
|
|-
|9002
|The entered number is invalid.
|
|-
|9003
|The entered Password is invalid.
|
|-
! colspan="3" |<span id="011"><h3>011 - eShop Site</h3></span>
|-
|24xx
|Server returned a 4xx HTTP error.
|[https://www.nintendo.co.jp/netinfo/en_US/index.html Server Status and Maintenance]
|-
|25xx
|Server returned a 5xx HTTP error.
|[https://www.nintendo.co.jp/netinfo/en_US/index.html Server Status and Maintenance]
|-
|3010 
|The server timed out due to inactivity.
|
|-
|3021
|eShop title not found (wrong region or non-existent).
|
|-
| 3136
|eShop currently unavailable. Try again later.
|
|-
|5998
|eShop is currently under maintenance.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/24326/ Nintendo Support Page]
|-
|6901
|Console permanently banned (this is always displayed in Japanese).
|
|-
! colspan="3" |<span id="012"><h3>012 - Browser Errors</h3></span>
|-
|1004
|The SSL connection Failed. 
|
|-
|1511
|SSL certificate warning. 
|
|-
! colspan="3" |<span id="014"><h3> 014 - Data Transfer Errors</h3></span>
|-
|0013 
|The System Transfer failed due to an invalid language setting.
|
|-
|0016
|The consoles have the same movable.sed. Format the target console and try again.
|
|-
|0062
|An error occurred during the System Transfer. Move closer to the router and try again.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/15664 Nintendo Support Page]
|-
! colspan="3" |<span id="022"><h3>022 - More Account Errors</h3></span>
|-
|1021
|There is no NNID linked to this system.
|
|-
|1022
|The entered NNID is already linked to the system.
|
|-
|2452
|Tried to access the eShop with UNITINFO patch enabled. Turn this off in Luma's configuration file, <code>sd:/luma/config.ini</code>.
|
|-
|2501
|The entered NNID is already linked to another system. Could be caused by a System Transfer (which transfers all associated NNID's, whether linked or not), restoring the Source System's NAND, and then attempting to use applications that require an NNID.
|
|-
|2502
|The NNID can't be used because it does not match the region setting of the system.
|
|-
|2503
|The network Service Agreement is not yet accepted.
|
|-
|2511
|A System Update is required (displayed by Miiverse).
|
|-
|2512
|A software update is required to use this title's online services.
|
|-
|2571
|This NNID is already in use.
|-
|2572
|NNID contains text that can't be used.
|-
|2573
|The entered password can't be used.
|-
|2574
|The entered nickname can't be used.
|-
|2575
|The entered email address is incorrect.
|-
|2576
|The entered NNID can't be used.
|-
|2577
|Your password cannot be identical to your NNID.
|-
|2578
|The entry contains characters that can't be used.
|-
|2579
|You can't use more than one punctuation character in your NNID.
|-
|2580
|You can't use punctuation as the first or last character of your NNID.
|-
|2581
|You can't use more than six numbers in your NNID.
|-
|2582
|Your entry contains characters that cannot be used.
|-
|2583
|Your password must contain characters from at least two of the following categories: letters, numbers and punctuation.
|-
|2584
|You can't use the same character three or more times in a row.
|-
|2585
|The email address you entered can't be used.
|-
|2586
|The domain name of the e-mail address you entered may be incorrect.
|-
|2587
|The NNID you entered already exists.
|-
|2591
|NNID is already linked to another system. Could be caused by a System Transfer (which transfers all associated NNID's, whether linked or not), restoring the Source System's NAND, and then attempting to use applications that require an NNID.
|-
|2592
|The limit for linking this NNID has been reached.
|-
|2593
|The entered NNID cannot be used because it has not yet been confirmed by a parent/guardian.
|-
|2594
|Parental Controls restrictions must be set up first.
|-
|2595
|You have not registered a Mii.
|-
|2611
|The entered password is incorrect.
|-
|2612
|The entered email address is incorrect.
|-
|2613
|The entered information is incorrect.
|-
|2613
|Incorrect email or password when attempting to link an existing NNID. Can also happen if the NNID is already linked to a system, or when attempting to download a title from the eShop without having a linked NNID on the console.
|
|-
| 2631
|The NNID you are trying to use has been deleted or can't be used for a system transfer. A transferable NNID will only work on the target system.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/4285/kw/022-2631 Nintendo Support Page]
|-
|2632
|The NNID has been changed.
|
|-
|2633
|This NNID has been temporarily locked due to too many password attempts. Try again later.
|
|-
|2634
|The NNID is not correctly linked to the system. To fix this, follow these steps, reboot the console, and try to sign into the NNID again.
|[[3DS:GodMode9/Usage#Removing_an_NNID_without_formatting_your_device|Said Steps]]
|-
|2643
|The session has expired.
|
|-
|2662
|You can't perform this operation several times in a row.
|
|-
|2672
|Use of credit card has been stopped.
|
|-
|2673
|The entered credit card cannot be used.
|
|-
|2674
|Check the credit card's number and enter it again.
|
|-
|2675
|Check the credit card's expiration date and enter it again.
|
|-
|2676
|Check the credit card's PIN and enter it again.
|
|-
|2677
|The entered information is not correct.
|
|-
|2679
|The entered credit card is expired.
|
|-
|2801
|Online Services cannot be used.
|
|-
|2802
|The entered NNID cannot be used.
|
|-
|2803
|Online Services cannot be used.
|
|-
|2812
|Console has been permanently banned by Nintendo for playing Pokémon Sun & Moon online before the release date.
|
|-
|2815
|Console has been permanently banned from accessing Miiverse by Nintendo.
|
|-
|2881
|The server is undergoing maintenance.
|
|-
|2882
|This online service has been discontinued.
|
|-
|2884
|This online service is not available in your country of residence.
|
|-
|2911
|Your ability to do online interactions has been restricted by Parental Controls.
|
|-
| 5363
|The NNID settings failed to load due to an invalid language setting.
|
|-
|5515
|The network timed out.
|
|-
|5531
|Cannot connect to account servers.
|[https://support.nintendo.com/networkstatus Server Status and Maintenance]
|-
! colspan="3" |<span id="026"><h3> 026 - Account/eShop?</h3></span>
|-
| 24xx
|Server returned a 4xx HTTP error.
|[https://www.nintendo.co.jp/netinfo/en_US/index.html Server Status and Maintenance] 
|-
|25xx
|Server returned a 5xx HTTP error.
|[https://www.nintendo.co.jp/netinfo/en_US/index.html Server Status and Maintenance]
|-
| 3221
|Failed to unlink the NNID during formatting. Try again.
|-
|3278
|eShop gift cards cannot be used on the 3DS eShop. Add funds through the website or Nintendo Switch. 
|
|-
! colspan="3" |<span id="032"><h3>032 - More Browser Errors</h3></span>
|-
|1035
|Unable to display the page.
|
|-
|1208
|Address not supported.
|[https://en-americas-support.nintendo.com/app/answers/detail/a_id/43018/~/error-code%3A-032-1208 Nintendo Support Page]
|-
|1820
|The Internet Browser cannot confirm the security of the website. Note that the 3DS Internet Browser is fairly old and does not contain certificates for certain issuers, namely Let's Encrypt, so it may show this issue for some websites that work fine on a modern device.
|
|-
! colspan="3" |<span id="090"><h3>090 - In-Game Specific Errors</h3></span>
|-
|0212
|The game is permanently banned from Pokémon Global Link for using altered or illegal save data.
|
|}

|-|BootROM=
<span style="font-size:175%; display:flex; justify-content:center">BootROM</span>
{| class="wikitable" style="margin: auto"
! style="font-size:125%;" | Error
! style="font-size:125%;" | Description
|-
|00F800FE<br>00000000 00000000<br>00000200 00000000	
|Error when having SD-card reader connected to NAND during boot.
|-
|00F800FE<br>00000000 00000000<br>00000400 00000000	
|NAND not found error (?)
|-
|00F800FE<br>FFFFFFFF FFFFFFFF<br>00000080 00800000	
|NAND error when DAT1 was used as DAT0.
|-
|00F800FE<br>FFFFFFFF FFFFFFFF<br>00000005 00800000	
|NAND error when DAT2 was used as DAT0.
|-
|00F800FE<br>FFFFFFFF FFFFFFFF<br>00000005 00000000	
|NAND error when DAT3 was used as DAT0.
|-
|00F800FF<br>F8F8FFFF FFFFFFFF<br>00000000 00000000	
|Both the firm0 and firm1 partitions are corrupt (failed signature checks).
|-
|00F800FF<br>DEDEFFFF FFFFFFFF<br>00000000 00000000	
|Both the firm0 and firm1 partitions are corrupt (possibly related to certain flags missing?)
|-
|00F800FF<br>CFCFFFFF FFFFFFFF<br>00000000 00000000	
|Both the firm0 and firm1 partitions are corrupt
|-
|00F800EE<br>FFFFFFFF FFFFFFFF<br>00000000 00000000	
|NCSD header in sector 0 is corrupt (failed signature check).
|}

</tabber>

=Reading error screens=

==Reading a Luma3DS exception screen==
[[File:Luma3DS_exception.png|right|300px]]A Luma3DS exception has four (or five, in a few cases) different parts to it that help in finding its cause, as follows: 

* '''Processor:''' What part of the system is causing the exception. The two processors are:
**'''Arm9:''' The 'security processor' of the system. These exceptions are usually raised because of errors in NAND data or hardware faults in either the 3DS or its SD card.
**'''Arm11:''' The 'userland' of the system. These exceptions have numerous causes but are more often related to broken software or user data.
* '''Exception type:''' The type of fault that caused the exception. These categories correspond to the ARM exceptions for the [https://developer.arm.com/documentation/ddi0201/d ARM9] and [https://developer.arm.com/documentation/ddi0360/f ARM11] CPUs, as follows:
**'''data abort''': Caused by a read or write to an invalid part of memory. Usually related to game mods/cheats/plugins, broken HOME Menu data, and/or broken CFW applications.
**'''prefetch abort''': Caused by an attempt to execute an invalid CPU instruction. Often related to conflicts between CFW and other software.
**'''prefetch abort (svcBreak)''': Caused by either Process9 or homebrew software manually terminating code because it matched a pre-defined condition. Often related to errors in NAND data, even when raised by Arm11. Can also happen when launching an out-of-region game that isn't [[3DS:SGL|locale emulated.]]
**'''prefetch abort (kernel panic)''': Caused by Kernel9 detecting an unrecoverable fatal error and forcibly shutting down to avoid damage. Can be related to any of several things, but hardware issues are the most likely.
**'''undefined instruction''': Caused by an attempt to execute a CPU instruction that was unimplemented, disallowed, or unusable. Often related to software not having the required files (if not on boot) or an outdated <code>boot.firm</code> (if on boot). 
*'''Fault status:''' The specific type of ARM exception that was raised. Helpful for developers, but not so much for the end user.
*'''Current process:''' Where the error is coming from in the system. Often the most helpful part of the exception. Some examples of processes are as follows:
**'''fs''': The filesystem, i.e. either the SD card or the NAND.
**'''menu''': Data that is opened either as a part of the HOME Menu or at the same time as it.	
**'''loader''': The service that opens apps, meaning the app most recently opened has an issue.
**'''nwm''': Networking services, almost always Wi-Fi.
**'''ns''': The <u>N</u>intendo User Interface <u>S</u>hell, which handles all apps/processes/services in 3DS mode.
*'''R0''': Usually just internal data that's not worth reading. There are two notable exceptions, however: 
**'''Arm11 loader exception''': If R0's contents start with a C or D, R0 is an error code. This code usually gives the exact cause of the issue.
**'''Arm11 pm exception''': If R0's contents are <code>E0E01BF5</code>, <code>boot.firm</code> is guaranteed to be too outdated to work.

==Reading a Luma3DS ErrDisp==

[[File:Luma3DS ErrDisp.jpg|right|300px]]A Luma3DS ErrDisp error has several parts, but only two of them help in finding its cause. They are as follows:

* '''Process name:''' The part of the system that is triggering the error. Can be helpful if the error code is generic.
* '''Error code:''' The specific reason the error occurred. This is almost always the most helpful part of the error.

== Reading an error code ==
<span>[[File:3DS error code.jpg|right|300px]]An error code has two parts - the code itself, and its official description.<br>
For this page, only the code matters</span>

==Reading boot9strap LED status codes==
Booting your console while holding {{B|X|START|SELECT}}, or if either FIRM file is corrupt, the notification LED will display a color indicating the status of the FIRMs located at <code>sdmc:/boot.firm</code> and <code>nand:/boot.firm</code>. Refer to the following table for their status:
{{B9s LED table}}
In addition, the LED will blink if booting from [[3DS:ntrboot|ntrboot]]<br>
NOTE: A red LED status can also occur if the NAND firm is missing rather than corrupt.

=Sources=
[[3DS:Error codes]]<br>
<!-- Up to date as of 22:51, 2 April 2024 id=5587 -->
[[3DS:Error screens/Luma3DS exception screen]]<br>
<!-- Up to date as of 14:44, 22 May 2024 id=6047 -->
[[3DS:Error screens/Luma3DS ErrDisp]]<br>
<!-- Up to date as of 07:29, 26 March 2024 id=5537 -->
[[3DS:Boot9strap]]<br>
{{GitHub|SciresM/boot9strap|boot9strap GitHub}}<br>
[[3dbrew:Bootloader]]

This page is up to date as of 04:08, 12 July 2024 (UTC)
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