Network Communication Codes (U0XXX)
Complete list of network communication diagnostic trouble codes (U0XXX). Browse codes for CAN bus and module communication issues.
Popular Network Communication Codes
U0121
Lost Communication with ABS
Lost Communication with Anti-Lock Brake System Control Module
U0202
Lost Communication with Instrument Panel
Lost Communication with Instrument Panel Control Module
U0300
Lost Communication with Infotainment
Lost Communication with Infotainment Control Module
Complete Network Codes Index
Browse all available network communication diagnostic trouble codes (U0XXX) organized by series:
Showing codes 1-100 of 8192 total codes
U0XXX Network Communication Systems
U0000
U0000 indicates a communication issue within the vehicle's CAN bus,
U0001
U0001 indicates a high-speed CAN communication error.
U0002
U0002 indicates a communication problem on the vehicle's CAN bus.
U0003
U0003 indicates a communication issue within the CAN bus network of your vehi...
U0004
U0004 indicates a fault in the high-speed CAN communication bus,
U0005
U0005 indicates a high-speed CAN communication error in your vehicle.
U0006
U0006 indicates a communication fault in the vehicle's CAN system.
U0007
DTC U0007 signifies a malfunction in high-speed CAN communication between veh...
U0008
U0008 indicates a problem with high-speed CAN communication between vehicle c...
U0009
The U0009 code indicates a communication problem between control modules in y...
U000A
The U000A code indicates a fault in high-speed CAN communication,
U000B
U000B signifies a high-speed CAN communication error, affecting vehicle modul...
U000C
DTC U000C indicates a communication error within the vehicle's control module...
U000D
U000D indicates a high-speed CAN communication error between vehicle modules.
U000E
U000E signifies a communication error in the vehicle's High-Speed CAN bus.
U000F
U000F indicates a communication issue within the vehicle’s CAN bus,
U0010
U0010 indicates a communication failure in the vehicle's network,
U0011
U0011 indicates a communication issue within the vehicle's network,
U0012
DTC U0012 indicates a communication error in the vehicle's network.
U0013
U0013 indicates a communication failure between vehicle control modules,
U0014
U0014 indicates a communication issue within the vehicle's Controller Area Ne...
U0015
U0015 indicates a communication issue within the vehicle's CAN bus system.
U0016
U0016 indicates a communication problem in the vehicle's CAN bus system.
U0017
U0017 indicates a communication error in the vehicle's control modules.
U0018
U0018 indicates a communication failure in the vehicle's control modules due ...
U0019
U0019 signifies a communication error in the High-Speed CAN bus network of yo...
U001A
U001A indicates a fault in the CAN communication network of your vehicle.
U001B
U001B indicates a communication failure with the Hybrid Powertrain Control Mo...
U001C
U001C indicates a communication error in the vehicle's control modules.
U001D
U001D indicates a communication error between control modules in your vehicle...
U001E
U001E indicates a communication issue within the vehicle's CAN bus,
U001F
U001F indicates a communication failure in the vehicle's network.
U0020
U0020 indicates a malfunction in the vehicle communication bus,
U0021
U0021 indicates lost communication with the vehicle control module,
U0022
The U0022 code signifies a communication failure within the vehicle's electro...
U0023
DTC U0023 indicates a communication problem in the vehicle's control area net...
U0024
U0024 indicates a communication failure in the vehicle's CAN bus system,
U0025
U0025 signifies a communication fault in the CAN bus network of your vehicle.
U0026
DTC U0026 means there is a communication failure in the vehicle's network,
U0027
U0027 indicates a communication error in the vehicle's network system.
U0028
DTC U0028 indicates a communication malfunction in the vehicle's CAN bus system.
U0029
DTC U0029 indicates a communication failure in the High Speed CAN bus system.
U002A
U002A indicates a communication failure on the vehicle's CAN bus A,
U002B
DTC U002B indicates a lost communication issue between control modules in you...
U002C
U002C indicates a fault in the high-speed CAN bus communication between vehic...
U002D
U002D indicates a communication error in the vehicle's CAN bus system.
U002E
U002E signifies a communication issue in the vehicle's control modules,
U002F
DTC U002F signifies a communication issue between control modules in your veh...
U0030
U0030 indicates a communication issue on your vehicle's CAN bus network,
U0031
DTC U0031 indicates a communication issue within the vehicle's electronic con...
U0032
U0032 indicates a communication error in the vehicle's high-speed CAN bus.
U0033
U0033 denotes a communication issue in the CAN bus system, specifically indic...
U0034
U0034 indicates a communication fault between control modules in your vehicle.
U0035
U0035 indicates a lost communication with Control Module A, affecting vehicle...
U0036
DTC U0036 indicates a communication failure in the vehicle's control modules ...
U0037
The U0037 code indicates a communication failure within the vehicle's control...
U0038
DTC U0038 indicates a communication error between vehicle control modules.
U0039
DTC U0039 indicates a communication fault in your vehicle's CAN bus system.
U003A
U003A indicates a communication failure in your vehicle's CAN bus system,
U003B
U003B indicates a communication fault in the vehicle's data bus system.
U003C
DTC U003C signifies a communication problem within the vehicle's CAN bus system.
U003D
U003D signifies a communication failure within the vehicle's network,
U003E
U003E indicates a communication bus off condition, meaning the vehicle's comp...
U003F
U003F indicates a communication failure within the vehicle's network,
U0040
DTC U0040 signifies a communication failure between vehicle control modules.
U0041
U0041 indicates a communication error between vehicle control modules.
U0042
U0042 indicates a communication error between modules in your vehicle.
U0043
DTC U0043 indicates a communication error between control modules in your veh...
U0044
U0044 indicates a communication error between control modules in your vehicle.
U0045
U0045 indicates a communication error in the steering control module,
U0046
U0046 indicates a communication error between control modules in your vehicle.
U0047
U0047 indicates a communication error between vehicle control modules.
U0048
U0048 signifies a communication error between vehicle control modules.
U0049
DTC U0049 indicates a communication issue between the control modules,
U004A
U004A indicates a communication fault within the vehicle's controller area ne...
U004B
The U004B code signifies a communication failure between control modules in y...
U004C
U004C indicates a communication failure between vehicle control modules.
U004D
U004D indicates a communication failure within the vehicle's network,
U004E
U004E signifies a communication failure between vehicle control modules.
U004F
U004F signifies a communication error between the engine control and hybrid p...
U0050
DTC U0050 signifies a communication error in the vehicle's CAN bus system,
U0051
U0051 indicates a communication error between vehicle control modules.
U0052
U0052 indicates a communication issue between control modules in your vehicle.
U0053
U0053 indicates a communication failure within the vehicle's data bus system.
U0054
U0054 indicates a communication failure with the body control module.
U0055
U0055 indicates a communication failure in the vehicle's data bus system.
U0056
U0056 indicates a communication error in vehicle control modules.
U0057
U0057 indicates a communication failure with the Body Control Module,
U0058
U0058 indicates a communication fault in the vehicle's bus system.
U0059
U0059 signifies a communication failure on the vehicle's bus system,
U005A
U005A signifies a communication error within your vehicle's control modules,
U005B
U005B indicates a communication failure in the vehicle's CAN bus system.
U005C
U005C indicates a communication failure on the CAN bus system,
U005D
U005D indicates a communication failure between the powertrain control module...
U005E
U005E indicates a communication failure in the vehicle's CAN bus system.
U005F
U005F indicates a communication failure between control modules in your vehicle.
U0060
U0060 indicates a communication failure between control modules.
U0061
U0061 signifies a communication error between vehicle control modules.
U0062
U0062 indicates a communication failure between vehicle control modules.
U0063
Indicates a situation where there is a loss of communication with the gateway...
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