Xbox 360:Error Codes

Do not ever put your console in the freezer or out in the cold/hot weather or wrap it in a towel. These "fixes" will cause bigger problems due to temperature shock, board warping, condensation, and overheating. Better cooling improvements and fixes can be found on this page.

This page is intended to be a comprehensive list of all error codes for all models of Xbox 360, as well as tutorials on fixing them if applicable/possible. This error code guide is in no way official and may not be 100% accurate as it is community sourced. We take no responsibility for any actions you may take to fix your console.

Generally, if there is a problem with the Xbox 360, the LEDs in the Ring of Light (ROL) around the power button will flash in a particular pattern. The pattern itself lends some insight to the problem. Certain patterns will also display numbered error codes on screen, known as your primary error code, which will further help diagnose your console’s issue.

Officially documented descriptions of the errors can be found on Octal’s RROD Database (officially documented errors).

Ring of Light Error Codes

Determining the malfunctioning component of your Xbox 360 depends on how many red lights around the power button are flashing.

One Red Light

If the bottom right red light is flashing on your Xbox 360, then your console is experiencing a hardware error. The console will still power on, and should display an error code on the screen it is connected to. The code will begin with an E, followed by two digits. Some in-depth error code information can be found on this page below. The Specific Type of hardware failure can be determined by the error code displayed on the screen. If the screen is blank or you would like additional information follow the instructions for determining the secondary error code in the section for it below.

Two Red Lights

When the left two lights are flashing red on the console, a component is overheating. It is likely that the fan will be running very loudly. Shut the console off and let it cool down for a couple hours. To prevent this from happening in the future, make sure your Xbox 360 is in a well-ventilated area and out of the immediate proximity of any walls, heaters, or other appliances. Alternatively Overheating can be cause by the console locking up or "freezing" after a set amount of time. Lockups that occur at a specific point in a game are generally problems with the game itself and not caused by overheating. Let the Xbox 360 console cool. You may have to wait several hours for the console to cool enough. Do not turn on the console when the console is hot. Verify that the console has sufficient ventilation and that the fan is operating. For more information about ventilation, see the Care page. To try to prevent this problem, use the following precautions: Do not block any ventilation openings on the Xbox 360 console, Do not put the Xbox 360 console on a bed, on a sofa, or on any other soft surface that may block ventilation openings, Do not put the Xbox 360 console in a confined space, such as a bookcase, a rack, or a stereo cabinet, unless the space is well-ventilated, Do not put the Xbox 360 console near any heat source, such as a radiator, a heat register, a stove, or an amplifier.

Three Red Lights ("Red Ring of Death")

The "Red Ring of Death" has occurred when all but the top right corner of the light ring are flashing red. A general hardware malfunction has occurred, affecting one or more components. The error message is not displayed directly, since the console doesn’t power on, but it is possible to obtain the secondary error code from the Xbox. Most, if not all, three-light errors in Xbox 360 consoles are related to overheating. The most common issue is a cracked or cold solder joint underneath the GPU on the motherboard. A flaw in the design of the heat sink allows the motherboard to warp in the area around the chip, which causes the chip to lose contact with the board. There are various fixes for the RROD, which include replacing the high-stress x-clamp, reflowing the GPU’s solder connection, and also replacing the heat sink in older models with Microsoft’s updated Zephyr heat sink. To keep your Xbox 360 from being affected by the RROD, keep it in a well-ventilated area and make sure the cooling vents are free from obstruction. If your Xbox begins to overheat, turn the power off and allow it to cool for at least an hour before continuing play. Alternatively, use an external fan to help circulate air across the device. If the RROD is already plaguing your Xbox, and your console is no longer covered by Microsoft’s warranty, there is hope yet. Even though the console will not turn on, you can obtain a secondary error code from it. After pinpointing the cause of your Xbox’s RROD, you can take the necessary action to remove the problem. Red Ring errors caused by the CPU or GPU are normally fixed by installing a Red Ring of Death Fix Kit. Try restarting the console. If restarting the console does not resolve the behavior, follow these steps: Turn the console off, Unplug all the power and AV cables from the console, Unplug the power cord from the wall socket, Firmly reconnect all the cables, Turn on the console. If these steps do not resolve the behavior, turn the console off, remove the hard drive, and then turn on the console. If the 3x Red LED error light is no longer displayed, turn the console off, re-attach the hard drive, and then turn on the console. Also examine the lights on the power supply. When you turn on the console, the power supply light should illuminate green even if the three lights on the ROL flash red.

Four Red Lights Flashing

The Xbox 360 A/V cable is not connected. Make sure that the AV cable is correctly connected to the Xbox 360 console. Reconnect the cable either to the console or the display you are using. Disconnect the AV cable from the Xbox 360 console, and then reconnect the AV cable to the Xbox 360 console. If the four flashing red lights continue to flash, try wiping the metal area of the AV pack with a dry cloth. The metal area is the end that plugs into the console. Wipe the metal area thoroughly, and then try the AV Pack again. If the AV cable is correctly connected but the four red lights are still flashing, substitute a different AV cable if you have one available.

Manufacture Mode (Xmas Lights)

Sections 1, 2, 3, and 4 are flashing red and green. If you attempted the JTAG hack, restore your original NAND image and/or reflow the Southbridge. Be aware that Xenon keyvaults have a Type 1 keyvault, while all other Xbox 360s have a Type 2 keyvault. Either type can be used on a Xenon, but a Type 1 keyvault cannot be used on a newer console or else you will get this error.

Primary Error Codes

0 Red Lights

E-Code	Secondary	Description	Fixes	Detailed Description
E26	0122	CPU/GPU Overheating(Xbox Slim)	Apply new thermal paste, make sure heatsink is making good contact with the heat spreader	This is the overheating code for the Xbox 360 slim for the CPU/GPU unit.
N/A	N/A	No Audio or no Video or both	X-Clamp Replacement and/or Reflow GPU and HANA chip	This error is caused by a cold solder joint in the GPU - HANA chip area, like E74.The 360 doesn’t recognize it yet though.
N/A	N/A	360 doesn’t turn on/PSU red light	Search the mainboard for shorts/metal chipping/components out of place/etc. X-Clamp replacement(GPU heatsink may be shorting out if too tight) and/or reflow the solder	This error can be triggered by a faulty power supply or a short in the console.The short is located near one of the main supply lines, so not under the chips, it might also be a blown capacitor fuse or just a bridged contact.

1 Red Light

E-Code	Secondary	Description	Fixes	Detailed Description
E64	1000	Bad DVD flash / dead flash chip(Timeout)	Check DVD power and SATA cable for damage and replace if necessary. Make sure any modifications have been installed properly. Flash chip may need desoldering and reflashing with an external progRAMmer, recover DVD key if possible(unless you have backup)	This error occurs if something goes wrong while flashing the drive or installing a modchip. A sign for it is that the DVD drive doesn’t eject the tray anymore. DVD drive timed out during reset. It can also be caused by a faulty DVD power or SATA cable.
E65	1001	Bad DVD flash / dead flash chip (DMA)	Ensure all modifications are installed properly. Try to reflash the correct firmware to the drive. The flash chip must be desoldered and reflashed with an external progRAMmer, recover DVD-key if possible(unless you have a backup).	This error occurs if something goes wrong while flashing the drive or installing a modchip. A sign for it is that the DVD drive can still be flashed and read out. DVD drive is not DMA configured.
E66	1002	Wrong DVD drive version	Reflash the firmware with the correct Vendor version string using your computer.	This error occurs when you replace the DVD drive and forget to spoof it with the correct version string of the drive you replaced.
E67	1003	Broken Hard drive (Timeout)	Replace hard drive. Also worth trying Southbridge X-Clamp fix and reflow the Southbridge.	This error occurs when your hard drive is defective, it might still work sometimes. Hard drive timed out during reset. There is also a small chance that it is a cold joint under the Southbridge causing problems with the I/O of the HDD.
E68	1010	Broken Hard drive (DMA)	Replace hard drive. Worth trying Southbridge X-Clamp fix and reflow Southbridge.	If you recently used it with a computer it may have gotten a faulty security sector. This error occurs when your hard drive is defective, it might still work sometimes…. It can also happen because of a bad EEPROM or a wrong security sector.It can also be a problem with the internal connection of the hard drive to the mainboard…Hard drive not DMA configured.
E69	1011	Broken Hard drive (HDDSS)	Unplug hard drive and plug back in. Restore HDDSS.bin(hard drive security sector backup). Replace hard drive.	This error occurs when your hard drives security sector is unreadable, if you have played around with that make sure to have the correct security sector on the drive…. However it could also just be defective and trigger the error because of that.
E70	1012	HDD Error Filesystem/Not Found	N/A	HDD Error (Corrupt Filesystem/partitions) or Hard drive not found
E71	1013	Dashboard update error (NAND related)	Patch for the fall update / Insert the NXE Update disk before the error screen appears. Reflow Southbridge and Southbridge X-Clamp fix. If software related, JTAG/RGH may be able to fix it.	This error is related to a failed dashboard update, can also be NAND related if you have an Infectus chip…. It can also often be caused by a cold joint under the Southbridge (if it wasn’t caused by an update). Error within Xam
E72	1020	NAND issue (loose pin/ bad flash)	Patch for the fall update / Insert the NXE Update disc before the error screen pops up. Reflow Southbridge and Southbridge X-Clamp fix. JTAG/RGH may fix.	This error is related to a loose pin or a not existent NAND chip, can also happen if you flashed it badly with an Infectus chip and/or the NAND is dead…. Error within Xam
E73	1021	Cold solder joint - Ethernet/Southbridge	Southbridge X-Clamp fix and reflow Southbridge. Check area under Southbridge for parts that may have fallen off/floated out of position and place them back on. Rarely, it can be GPU related, so GPU reflow & X-Clamp fix may help.	This error is caused by a cold solder joint under the Southbridge or the ethernet chip. In rare cases it can also be triggered by a cold joint under the GPU on one of the lines that run to the Southbridge chip. Missing parts(caps, resistors…) under the Southbridge can trigger this error as well.
E74	1022	Cold solder joint under GPU- (H)ANA	If you soldered anything to the mainboard before it occurred, whatever you are powering from this point is drawing too much power so get rid of it.Also get rid of everything that you can see that might bridge anything near the GPU. Tighten the GPU screws facing the HANA chip slightly more and make sure to be using a shim. Adding an extra shim on each side of the smaller chip dye will help to create more surface against the heatsink and will increase the chances of the error going away for good. If there is a lot of flexing under the GPU, bake the board to unflex it. Reflow the GPU and HANA chip.	This error is caused by a cold solder joint under the GPU, (H)ANA-chip or in between. Mostly it is one of the outer solder balls on the side facing the (H)ANA chip so a shim increases the chanced of success quite a bit. Can also be a component that is missing or damaged so look for missing parts near the GPU and the (H)ANA chip.
E75	1023	Network chip cold joint / wrong vendor	Connect the DVD drive and check if the error code is still the same… Remove everything you might have soldered to this area. Reflow the Southbridge and Network chip. Replace the Network chip.	This error is related to the network chip, might be power related or so.This can happen while installing and NME 2. In general it sounds like a cold solder joint somewhere there.However it can also be a Hitachi DVD drive that is not connected… Couldn’t read ethernet phy vendor/wrong ethernet vendor.
E76	1030	Dead network chip	Replace the Network chip. Connect the DVD drive and check if the error code is still the same. Remove everything you might have soldered to this area. Reflow the Southbridge and Network chip.	This error is caused by a dead network chip. This can happen when lightning hits your house and the network chip is under high voltage. Couldn’t complete ethernet reset.
E77	1031	Dead network chip	Replace the Network chip and other damaged components around it like blown capacitors defective regulators etc. Also reflowing Southbridge and Network chip can help	This error is caused by a dead network chip. It can occur when your house gets hit in a thunderstorm… phy request is already processing/ reading reg failed/ Failed to write reg.
E78	1032	AsicId check failed	N/A	AsicId check failed
E79	1033	Broken hard drive (Xam.xex)	Replace hard drive. Try Southbridge X-Clamp fix and reflow Southbridge. Check JTAG wiring! Especially the diodes they MUST face the correct direction - Away from J2D2.	This error occurs when your hard drive is defective, it might still work sometimes…. There is also a small chance that it is a cold joint under the Southbridge causing problems with the I/O of the HDD. It can also be related to wiring the diodes while JTAGing. Couldn’t start xam.xex.
E80	1100	NAND - Wrong LDV Version	Downgrade to the old dashboard, solder the resistor back on and then update your Xbox. If you have the CPU Key, get the current NAND Flash image and fix the LDV (Just add 1 up to latest kernel).	Wrong LDV version in NAND Flash. You have the new dashboard update but not the resistor R3T6, follow known fixes to see how to resolve the problem.

2 Red Lights

E-Code	Secondary	Description	Fixes	Detailed Description
E05	0011	The CPU is overheating	Make sure the CPU heatsink is making good contact with the chip, apply a thin layer of compound and put the heatsink on without screws, make sure it gives a good imprint then. Replace CPU X-Clamps, apply new thermal compound. It is possible to cut the temperature sensor trace, but is not recommended.	This error appears when the CPU overheated, after that the Xbox locks itself until it cooled the chip down. The reason for that is that the heat cant be dissipated to the heatsink/the heatsink isn’t cooled properly… This can be the result of improper thermal compound usage or if the error comes up instantly while booting the console, the heatsink will likely not be making any contact at all with the chip. In rare cases it can also be a faulty temp sensor.
E06	0012	The GPU is overheating	Make sure the GPU heatsink is making good contact with the chip, apply a thin layer of compound and put the heatsink on without screws, make sure it gives a good imprint then. Replace GPU X-Clamps and apply new thermal compound. It can also be fixed sometimes by just a slight tightening the GPU bolts, (1/4 or 1/8 turn).	This error appears when the GPU overheated, after that the Xbox locks itself until it cooled the chip down. The reason for that is that the heat cant be dissipated to the heatsink/ the heatsink isn’t cooled properly… This can be the result of improper thermal compound usage or if the error comes up instantly while booting the console, the heatsink will likely not be making any contact at all with the chip.
E07	0013	Cold joint under RAM/RAM overheating	Putting the faulty RAM brick under pressure with a 3mm thick craft foam pad. Reflow the RAM chips. A hybrid X-Clamp fix may help.	In 99% of the cases it is a cold solder joint under one of the RAM bricks though. It is also said to be an indicator for RAM overheating but this is extremely rare. This error may also be caused by cold solder joint under the HANA chip (Not Confirmed). 2 RAM bricks under the GPU heatsink cause the error 99% of the time.

2 Red and 2 Green Lights

E-Code	Secondary	Description	Fixes	Detailed Description
E48	0300	MFG-Mode: Connection Failed	Reflow Southbridge and/or Restore NAND	It shows that when the console is in manufacturing mode, theoretically it can also be a Southbridge issue so reflowing might work. More likely is an improper NAND update though, so a software related problem.
E49	0301	MFG-Mode: Gateway Connect/ NAND Corrupt/Blank	Replace RF board, Reflow Southbridge, and/or Restore NAND	This error can be caused by a faulty RF board and is indicated by 2 green and 2 red lights which swap every few seconds. It shows that when the console is in manufacturing mode as well, there are rumors that Microsoft does that to modded consoles that were sent in for repairs. It can also occur after an improper NAND update. When the Ethernet cable is connected it also shows E49 on the screen which means that it couldn’t connect to the gateway server in the factory. Single Red Light Takes About 6 Minutes To Show Up.
E50	0302	MFG-Mode: ConnectX cant be loaded	Reflow southbridge and/or Restore NAND	It shows that when the console is in manufacturing mode, theoretically it can also be a Southbridge issue so reflowing might work. More likely is an improper NAND update though, so a software related problem.
E51	0303	MFG-Mode: Gateway IP not found	Reflow Southbridge and/or Restore NAND	This error is caused by a problem with the NAND content it might be corrupted and needs to be corrected. This error specifically means that the Console cannot find the IP-address of the Gateway.
E52	0310	MFG-Mode: Unable to parse the host response	Reflow Southbridge and/or Restore NAND	It shows that when the console is in manufacturing mode, theoretically it can also be a Southbridge issue so reflowing might work. More likely is an improper NAND update though, so a software related problem. Could also be problem with Base64 encoding when sending commands.
E53	0311	MFG-Mode: Response submitted (factory command)	Reflow Southbridge and/or Restore NAND	It shows that when the console is in manufacturing mode, theoretically it can also be a Southbridge issue so reflowing might work. More likely is an improper NAND update though, so a software related problem.
E54	0312	MFG-Mode: Problem setting keys	Reflow Southbridge and/or Restore NAND	It shows that when the console is in manufacturing mode, theoretically it can also be a Southbridge issue so reflowing might work. More likely is an improper NAND update though, so a software related problem.
E55	0313	MFG-Mode: Phy Mfgbootlauncher fail?	Reflow Southbridge and/or Restore NAND	It shows that when the console is in manufacturing mode, theoretically it can also be a Southbridge issue so reflowing might work. More likely is an improper NAND update though, so a software related problem.

3 Red Lights

E-Code	Secondary	Description	Fixes	Detailed Description
E00	0000	Xbox freezes after showing the first digit of the error code	Remove the dust from under Southbridge and HANA chip. Reflow Southbridge. X-Clamp replacement.	The Xbox doesn’t know what’s wrong it freezes after showing the first digit(0) of the error code. Might be a cold solder joint somewhere under the GPU as someone fixed it with the X-Clamp replacement, might also be scaler or Southbridge related since this is where the error code is calculated… It can also be caused by dust under the Southbridge and the HANA chip so please check for that…
E01	0001	Short circuit in the console/faulty PSU	Make sure your PSU is working and replace it if it isn’t. Scan the mainboard and make sure that there is nothing that might short something out, like metal chipping, components, that move out of place while using a heatgun, etc. Replace MOSFETs and regulators that are known to cause it if they were blown. Check if the standby voltages are existent, if they are not at a certain area replace the parts in the area which are likely to be defective. Reflow the CPU, HANA chip. X-Clamp replacement.	This error can be triggered by a faulty power supply or a short in the console. The short is located near one of the main supply lines, so mostly not under the chips, it might also be a blown capacitor fuse or just a bridged contact. Also damaged DVD power cable. The GPU heatsink might be shorting out if you screwed it in too tight.
E02	0002	Cold solder joint under CPU	Scan the mainboard and make sure that there is nothing that might short something out, like metal chipping, components, that moved out of place while reflowing, etc. - Especially in the CPU area. Replace MOSFETs and regulators that are known to cause it if they were blown. Check if the standby voltages are existent, if they are not at a certain area replace the parts in the area which are likely to be defective. Reflow the CPU. X-Clamp replacement.	This error code is caused by a cold solder joint under the CPU or by a problem with the way it is powered(blown MOSFET, capacitor or a short). It may also be a problem with the ethernet chip but there aren’t any references for that.
E03	0003	Power problem/ Cold solder joint under CPU	Scan the mainboard and make sure that there is nothing that might short something out, like metal chipping, components, that moved out of place while reflowing, etc. - Especially in the CPU area. Replace MOSFETs and regulators that are known to cause it if they were blown. Check if the standby voltages are existent, if they are not at a certain area replace the parts in the area which are likely to be defective. Reflow the CPU. X-Clamp replacement.	The CPU is somehow not getting clean power, can be a cold solder joint under it or one of the external parts like a missing cap etc.
E04	0010	Cold solder joint under Southbridge OR bad RF board	Try another RF board. If LEDs were modded, try removing them. Southbridge X-Clamp replacement. Southbridge reflow. Check the are under the Southbridge for parts that might have fallen off and solder them back on.	There is a problem with the Southbridge Chip usually dealing with how it connects to the mainboard (cold solder joint/bridged solder joints)(Taken from Xbox-Scene)
E08	0020	Bridged solder joint/short - CPU/GPU/RAM	If you worked on the mainboard recently(soldered or so) remove these wires because you might be drawing too much power from the GPU. Also look for missing/bridged components like capacitors/resistors. If you JTAG hacked the console, remove wires and resistors, the parallel port can stay as long as no PC is connected. X-Clamp replacement. Flush with alcohol, let dry, begin reflow with flux like below. Reflow GPU and RAM area. Reball GPU and RAM for bridged solder.	This error is caused by a bridged solder joint under CPU, GPU or one of the RAM bricks. This effect can also be caused by tin whiskers leading to shorts and if the GPU was taken off the mainboard this error will also show up. It can also be power related(the CPU/GPU or RAM isn’t getting enough power). Can also be a component that is missing or damaged so look for missing and bridged parts near the GPU. If the console was JTAGged and the resistors and cables are still connected it will show 0020, the parallel port can stay as long as no PC is connected.
E09	0021	Bridged solder joint/Short - GPU/Southbridge	If you worked on the mainboard recently(soldered or so) remove these wires because you might be drawing too much power from the Southbridge. Also look for missing/bridged components like capacitors/resistors. X-Clamp replacement. Southbridge X-Clamp fix. Reflow Southbridge/Ethernet chip area. Reball the Southbridge - bridged solder. If you work in dumping lite-on 8xxxx and 9xxxx with jumper, Check your DVD drive motherboard again, if there’s still some shorting. Wrong GPU model (e.g. Zephyr/Falcon GPU reballed onto a Xenon board).	This error is caused by a bridged solder joint under GPU or Southbridge. It can also be power related(the Southbridge isn’t getting enough power). Can also be a component that is missing or damaged so look for missing and bridged parts(caps etc) near the Southbridge.
E10	0022	Bridged solder joint/Short GPU-> (H)ANA	If you soldered anything to the mainboard before it occurred, whatever you are powering from this point is drawing too much power so get rid of it.Also get rid of everything that you can see that might bridge anything near the GPU. X-Clamp replacement. Reflow GPU and HANA chip. Reflow GPU and HANA chip. Reflow CPU. If using JTAG on JTAG-fixed Xbox 360 this will appear, flash to original NAND. Can be caused by broken trace.	This error is caused by a bridged/shorting solder joint under the GPU, (H)ANA-chip or in between. It can also be power related though, for example if you are drawing power from one of the regulators that power the GPU and HANA-chip. Can also be a component that is missing or damaged so look for missing parts near the GPU and the HANA chip. In extremely rare cases it might also be related to the lines that lead from HANA to the CPU. The chances are however higher that it is the GPU than the HANA chip so you should always first concentrate on the GPU. Another cause could be due to a broken trace under the board near one of the RAM blocks (picture). This error also shows up if the CPU was taken off the mainboard.
E11	0023	(unknown) probably a short under Southbridge>ANA	N/A	This error is unknown but assumed to be a short either under Southbridge and (H)ANA chip or in between these. Look for 0021 and 0022 and reflow the Southbridge-> HANA chip area, the X-Clamp Fix might help as well.
E12	0030	Temp sensor problem/ Cold solder joint under CPU	Replace X-Clamps. Reflow CPU. Cut CPU temp sensor trace (NOT RECOMMENDED!)	The temp sensor is not working properly, maybe because it is shorting out (2 bridged solder balls). If it’s completely broken, you may need to cut the trace anyway.
E13	0031	Faulty RAM brick/ Shorted out resistor	Reflow RAM and Southbridge. Loosen heatsink screws and make sure heatsink isn’t shorting out a capacitor. Replace faulty RAM brick. X-Clamp replacement. Replace DVD power cord. Unbridged U6T1 or U6T2(points that protect CPU-fuse)	This error is caused by a faulty/cracked RAM brick, however it can also be caused when the heatsink is shorting out a resistor or like a bad solder joint under the GPU?, check out the links in the references… Also caused by the Southbridge if not properly soldered to motherboard or if it experiences a power short. Can be caused by a backwards power cord or faulty power cord to DVD player. If you update to freeboot 9199 with bridged U6T1 or U6T2 this error will appear, unbridged it.
E14	0032	(unknown) probably temp sensor related	N/A	Might be temp sensor related, check out 0030
E15	0033	(unknown) probably temp sensor related	N/A	Might be temp sensor related, check out 0030
E16	0100	Cold solder joint - GPU	X-Clamp Replacement. Reflow GPU.	This error is a Cold solder joint under the GPU just like 0102, can be fixed with the X-Clamp replacement.
E17	0101	USB port (bridged pins)	Unplug all USB devices that might be connected to your 360. Remove solder from the pins under the USB ports so that they are not shorting out anymore, also check the ports themselves and make sure that the pins inside aren’t bridging.	This error is caused by bridged solder joints under the USB ports or a defective USB device that is connected to it.
E18	0102	Cold solder joint - CPU/GPU/RAM	X-Clamp replacement. Reflow GPU and RAM.	This error is caused by a cold solder joint under CPU, GPU or one of the RAM bricks. Can also be a component that is missing or damaged so look for missing parts near the GPU.
E19	0103	Cold solder joint- GPU/ bad cap	Remove short circuit from bridged capacitor under the GPU. X-Clamp replacement. Reflow CPU/GPU/RAM.	This error can either be caused by a cold solder joint under the GPU or a bridged capacitor under it(power problem).
E20	0110	Cold solder joint -> RAM	Reflow the RAM. Loosen your heatsink screws and make sure the heatsink isn’t shorting out a capacitor. Look for missing and bridged components like resisitors and caps and replace them. X-Clamp replacement.	This error is caused by a cold solder joint under one of the RAM chips, mostly its the top ones, sometimes it can also be one of the solder balls under the GPU that lead to the RAM. It can also be cause by a broken trace that connects the GPU and the RAM, the reason for it to break could be the flexing in this certain area.
E21	0111	(unknown) probably NAND/RAM?	N/A	This error is unknown but could be somehow related to a cold solder joint under the RAM.On Xbox-scene there was also a post in which was claimed that it has to do with the NAND.
E22	0112	(unknown) probably RAM	N/A	This error is totally unknown, probably it is RAM related like 0110.
E23	0113	(unknown) probably RAM	N/A	This error is totally unknown, probably it is RAM related like 0110.
E24	0120	(unknown) short under RAM	Penny fix on RAM	This error is unknown but someone on Xbox-scene could fix it using the penny fix.Could be a short in the area under the RAM that causes 0110 when there is a cold solder joint. If it was like usual the error code would be 0020.
E25	0121	Cold solder joint under CPU	Replacing the X-Clamps. Reflowing CPU.	Cold solder joint under CPU. The CPU cant communicate with the mainboard.
E27	0123	(unknown)	N/A	The error is completely unknown
E28	0130	(unknown)	N/A	The error is completely unknown
E29	0131	(unknown)	N/A	The error is completely unknown
E30	0132	(unknown)	N/A	The error is completely unknown
E31	0133	(unknown)	N/A	The error is completely unknown
E32	0200	Cold solder joint GPU/RAM	Reflow the GPU/RAM and flush them with alcohol. X-Clamp Fix.	This error is caused by a Cold Joint in the GPU/RAM area similar to 0102 good results could be achieved with flushing alcohol under the chips, reflowing them and afterwards applying an X-Clamp Fix.
E33	0201	Cold solder joint-> GPU/RAM	N/A	The error is very rare but it is somehow GPU/RAM related, two people could fix it with the Improved X-Clamp replacement, one had to remove his washers from the RAM in order to get it to work.
E34	0202	(unknown)	N/A	The error is completely unknown
E35	0203	GPU related - resistors	N/A	code 0203 - instant RROD every time. chip malfunction, not getting a connection to the board (not an overheating problem but a bad contact problem) mine turned out to be broken prongs in a corner on the GPU, missing 3 of them. didn’t see this until i was comparing with another board. i believe these are mini resistors on the bottom side of the chip due to mistreatment.
E36	0210	(unknown)	N/A	This error is completely unknown
E37	0211	(unknown)	N/A	This error is completely unknown
E38	0212	(unknown)	N/A	This error is completely unknown
E39	0213	(unknown)	N/A	This error is completely unknown
E40	0220	(unknown) missing resistors GPU	N/A	This error is unknown but is assumed to be caused by missing resistors, probably on GPU.
E41	0221	(unknown)	N/A	This error is completely unknown.
E42	0222	(unknown) GPU/CPU related?	X-Clamp replacement.	This error is unknown but someone managed to fix it using the X-Clamp replacement.
E43	0223	(unknown)	N/A	This error is completely unknown.
E44	0230	(unknown)	N/A	This error is completely unknown.
E45	0231	(unknown)	N/A	This error is completely unknown.
E46	0232	DVD Drive Failure	Fixed by Microsoft (unconfirmed)	"The DVD drive overheats. This error can be caused by the disconnecting of the DVD drive. This is usually not the case." (unconfirmed)
E47	0233	(unknown)	N/A	This error is completely unknown.
E56	0320	(unknown)	N/A	This error is completely unknown.
E57	0321	(unknown)	N/A	This error is completely unknown.
E58	0322	(unknown)	N/A	This error is completely unknown.
E59	0323	(unknown)	N/A	This error is completely unknown.
E60	0330	(unknown)	N/A	This error is completely unknown.
E61	0331	(unknown)	N/A	This error is completely unknown.
E62	0332	(unknown)	N/A	This error is completely unknown.
E63	0333	(unknown)	N/A	This error is completely unknown.

4 Red Lights

E-Code	Secondary	Description	Fixes	Detailed Description
N/A	4444	Faulty/Missing A/V cable or (H)ANA related	N/A	N/A

Secondary Error Codes

A secondary error code can be obtained through a button combination to provide more insight on the issue the Xbox 360 is experiencing. To determine which error message corresponds to your secondary error code, consult the secondary error code list provided by Xbox-Experts.

1. Power the console on so the red lights are flashing.
2. Press and hold the small white Sync button and press the Eject button.
3. The LEDs will now blink the first number in the code (see number table below).
4. Release the eject button and press it again.
5. The LEDs will now blink the second number of the code.
6. Release the eject button and press it again.
7. The LEDs will now blink the third number of the code.
8. Release the eject button and press it again.
9. The LEDs will now blink the forth number of the code.
10. Release the eject button and press it again.
11. The LEDs will go back to the 3 red flashing lights.

You should be able to determine the difference between the 3 flashing lights and the error code lights by the rate in which they flash.

Number of Lights Flashing	Error Digit
Four	0
One	1
Two	2
Three	3

References

• (officially documented errors) Octal's RROD Database
• x-ex.com
• xmoddz.com
• Gung Ho Guns on Se7ensins.com
• WikiHow
• iFixIt