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 101-200 of 4097 total codes
U0XXX Network Communication Systems
U0064
DTC U0064 signifies a communication failure within the vehicle's control modu...
U0065
The diagnostic trouble code (DTC) U0065 signifies a communication issue withi...
U0066
DTC U0066 signifies a communication problem between control modules in your v...
U0067
U0067 indicates a communication issue between ECUs in your vehicle.
U0068
U0068 is a communication issue on the vehicle's bus 'A,' affecting data trans...
U0069
U0069 indicates a communication failure between the ECM and VDC module.
U006A
The U006A code signifies a communication breakdown between vehicle control mo...
U006B
U006B indicates a communication failure between vehicle control modules.
U006C
U006C indicates a loss of communication with Control Module A,
U006D
U006D signifies a communication issue between vehicle control modules.
U006E
U006E means there's a communication issue with Control Module A,
U006F
U006F indicates a communication error between vehicle control modules.
U0070
DTC U0070 signals a communication malfunction in the vehicle's bus system.
U0071
U0071 indicates a communication error in the vehicle's control modules,
U0072
U0072 means the vehicle's communication bus is offline, affecting electronic ...
U0073
DTC U0073 signifies a communication failure within the vehicle's Bus A network.
U0074
Indicates a communication issue within the vehicle's Controller Area Network ...
U0075
U0075 indicates a communication failure between control modules in your vehicle.
U0076
U0076 indicates a communication failure on the vehicle's CAN bus,
U0077
DTC U0077 indicates a communication failure in the vehicle's CAN bus A system.
U0078
U0078 indicates a communication failure on the CAN bus, affecting multiple sy...
U0079
U0079 indicates a communication failure between control modules in your vehicle.
U007A
U007A indicates a communication failure in the vehicle's bus system.
U007B
U007B indicates a communication failure between vehicle control modules.
U007C
DTC U007C signifies a failure in the communication between vehicle control mo...
U007D
DTC U007D signals a communication failure between control modules in your veh...
U007E
The U007E code indicates a communication failure in the vehicle's control mod...
U007F
U007F indicates a loss of communication with the Gateway 'A' control module.
U0080
U0080 signifies a communication error between vehicle control modules.
U0081
U0081 indicates a communication failure between vehicle control modules.
U0082
DTC U0082 indicates a communication failure on the vehicle's bus system,
U0083
DTC U0083 indicates a communication failure in the vehicle's data bus system,...
U0084
U0084 indicates a communication failure between vehicle control modules.
U0085
U0085 signifies a communication failure in the vehicle's internal network,
U0086
DTC U0086 indicates a communication failure between vehicle control modules.
U0087
U0087 indicates a communication failure between control modules in your vehicle.
U0088
U0088 signifies a communication failure within the vehicle's CAN bus system.
U0089
U0089 indicates a communication failure with the Battery Energy Control Module.
U008A
U008A indicates a communication failure between vehicle control modules.
U008B
U008B signifies lost communication with the vehicle control module.
U008C
U008C indicates a communication problem between control modules.
U008D
U008D indicates a communication failure between control modules in your vehicle.
U008E
U008E indicates a communication failure with the Body Control Module,
U008F
U008F indicates a communication failure with the Battery Energy Control Module.
U0090
U0090 indicates a communication failure within the vehicle's CAN bus system.
U0091
U0091 signifies a communication failure with the Battery Energy Control Module.
U0092
U0092 indicates a communication failure between vehicle control modules,
U0093
U0093 signifies a communication error between the Powertrain Control Module a...
U0094
U0094 indicates a lost communication with the Battery Energy Control Module,
U0095
U0095 signifies a communication failure between vehicle control modules,
U0096
U0096 indicates a lost communication issue between modules in your vehicle,
U0097
DTC U0097 indicates a communication failure between the Engine Control Module...
U0098
U0098 indicates a communication issue within your vehicle's control modules.
U0099
U0099 indicates a communication fault between control modules in your vehicle...
U009A
U009A indicates a communication failure between control modules in your vehicle.
U009B
U009B indicates a communication failure between vehicle control modules.
U009C
U009C indicates a communication malfunction between vehicle control modules.
U009D
U009D signifies a communication error between control modules in your vehicle.
U009E
U009E indicates a communication failure within the vehicle's network.
U009F
U009F indicates a lost communication between the vehicle control module and o...
U00A0
U00A0 indicates that there is a communication failure within the vehicle's co...
U00A1
U00A1 indicates a communication issue within the vehicle's control modules.
U00A2
U00A2 indicates a communication issue between modules in your vehicle's network.
U00A3
The U00A3 code indicates a communication failure in the vehicle's network,
U00A4
U00A4 indicates a communication error between vehicle control modules.
U00A5
U00A5 indicates a communication error on the vehicle's CAN bus.
U00A6
U00A6 indicates a communication error between control modules in your vehicle.
U00A7
U00A7 indicates a communication error between vehicle modules,
U00A8
U00A8 indicates a communication failure between vehicle modules.
U00A9
DTC U00A9 indicates a communication issue within the vehicle's electronic con...
U00AA
DTC U00AA signifies a communication error within the vehicle's network,
U00AB
DTC U00AB indicates a communication error between vehicle modules.
U00AC
U00AC indicates a communication failure between vehicle control modules.
U00AD
The U00AD code signifies a communication error in the vehicle's CAN network.
U00AE
U00AE indicates a communication error between vehicle control modules.
U00AF
U00AF indicates a communication error in the vehicle's network system.
U00B0
U00B0 indicates a communication error between the vehicle's control modules.
U00B1
U00B1 indicates a communication fault in the vehicle's network.
U00B2
U00B2 indicates a communication fault between vehicle control modules.
U00B3
DTC U00B3 indicates a communication issue between control modules in your veh...
U00B4
U00B4 indicates a communication failure in the vehicle's CAN bus system,
U00B5
U00B5 indicates a communication error between vehicle control modules.
U00B6
U00B6 indicates a communication error between vehicle control modules,
U00B7
U00B7 is a communication error code that indicates a problem with the vehicle...
U00B8
U00B8 indicates a communication issue between vehicle control units.
U00B9
U00B9 signifies a communication fault in the vehicle's CAN bus system that af...
U00BA
DTC U00BA indicates a communication fault between vehicle control modules.
U00BB
U00BB indicates a communication issue between control modules in your vehicle.
U00BC
Indicates an immediate threat to safety, it can lead to the malfunction of cr...
U00BD
DTC U00BD indicates a network communication issue between vehicle control mod...
U00BE
U00BE indicates a communication malfunction between vehicle control modules.
U00BF
U00BF indicates a communication fault between vehicle control modules.
U00C0
U00C0 indicates a communication issue within the vehicle's electronic control...
U00C1
DTC U00C1 indicates a communication error between modules in your vehicle.
U00C2
The U00C2 code signifies a communication error within the vehicle's CAN network.
U00C3
DTC U00C3 indicates a communication error between vehicle control modules.
U00C4
DTC U00C4 signifies a communication breakdown within the vehicle's control mo...
U00C5
U00C5 signifies a communication error between vehicle control modules.
U00C6
U00C6 indicates a communication error between control units in the vehicle.
U00C7
The U00C7 code indicates a communication issue in the vehicle's Controller Ar...
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