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 4101-4200 of 8192 total codes
U1XXX Network Communication Systems
U1004
U1004 indicates a communication fault in the vehicle's CAN bus system.
U1005
U1005 indicates a communication error within the vehicle's network.
U1006
DTC U1006 indicates a communication failure in the vehicle's network,
U1007
DTC U1007 signals a communication issue within the vehicle's CAN bus network,...
U1008
The U1008 code indicates a communication line malfunction in the vehicle's co...
U1009
U1009 indicates a communication issue between vehicle modules.
U100A
Indicates a communication bus failure, specifically related to the Controller...
U100B
U100B indicates a communication problem between the Body Control Module and o...
U100C
U100C indicates a communication error between modules in your vehicle.
U100D
U100D indicates a communication error between the vehicle’s control modules.
U100E
The U100E code indicates a communication issue between vehicle control modules.
U100F
U100F indicates a communication issue within the vehicle's control modules,
U1010
U1010 indicates a communication failure within the vehicle's network,
U1011
U1011 indicates a communication fault within the vehicle's CAN bus system,
U1012
U1012 indicates a communication error between control modules in your vehicle.
U1013
DTC U1013 indicates a communication issue in the vehicle's data bus,
U1014
U1014 indicates a communication failure between control modules in your vehicle.
U1015
U1015 indicates a communication fault in the vehicle's network,
U1016
U1016 indicates a communication failure between control modules.
U1017
U1017 is a communication line fault code indicating a problem with data excha...
U1018
U1018 indicates a communication error between control modules in your vehicle.
U1019
U1019 indicates a communication error between vehicle control modules.
U101A
U101A indicates a communication failure between vehicle modules.
U101B
U101B indicates a communication failure between vehicle control modules.
U101C
U101C indicates a communication issue in the vehicle's control module network.
U101D
The U101D code signals a communication failure among vehicle control modules,...
U101E
U101E indicates a communication error between vehicle control modules.
U101F
U101F indicates a communication issue between vehicle control modules.
U1020
U1020 indicates a communication error between control modules in your vehicle.
U1021
U1021 indicates a communication error between vehicle control modules.
U1022
U1022 indicates a communication error between vehicle control modules,
U1023
U1023 indicates a communication error in the vehicle's bus network.
U1024
DTC U1024 indicates a communication issue between the PCM and other vehicle m...
U1025
U1025 indicates a communication error between modules in your vehicle.
U1026
U1026 signifies a communication error between vehicle control modules,
U1027
DTC U1027 indicates a communication error between modules in the vehicle's ne...
U1028
DTC U1028 refers to a communication error between control modules in your veh...
U1029
U1029 indicates a communication error within the vehicle's CAN bus system.
U102A
U102A indicates a communication failure between the vehicle's control modules.
U102B
U102B indicates a communication failure with a control module in your vehicle.
U102C
U102C indicates a communication error between vehicle control modules,
U102D
U102D indicates a communication error in the CAN bus network of your vehicle.
U102E
U102E indicates a communication fault between control modules.
U102F
U102F indicates a communication issue between control modules in your vehicle.
U1030
U1030 indicates a communication fault between vehicle modules.
U1031
U1031 indicates a communication error in the CAN bus system of your vehicle.
U1032
U1032 is a communication error between control modules in your vehicle's netw...
U1033
U1033 indicates a communication issue between multiple control modules in the...
U1034
U1034 indicates a communication failure between vehicle control modules.
U1035
U1035 indicates a communication fault in the vehicle's CAN bus,
U1036
U1036 indicates a communication error between vehicle control modules.
U1037
U1037 indicates a communication error between vehicle control modules.
U1038
U1038 indicates a communication issue within the vehicle's control modules.
U1039
DTC U1039 indicates a communication failure between the vehicle's control mod...
U103A
U103A indicates a communication failure between vehicle control modules.
U103B
DTC U103B signals a communication malfunction between the TCM and other contr...
U103C
U103C indicates a communication issue between vehicle control modules.
U103D
U103D indicates a communication failure between the vehicle control module an...
U103E
DTC U103E indicates a communication error between vehicle modules.
U103F
U103F indicates a communication error between control modules in your vehicle.
U1040
U1040 indicates a communication failure with the ABS module.
U1041
U1041 indicates a communication error between the vehicle's control modules,
U1042
U1042 indicates a communication loss with the ABS module.
U1043
U1043 indicates a communication failure between modules related to vehicle sp...
U1044
U1044 indicates a communication failure between vehicle control modules.
U1045
U1045 indicates a loss of communication with the Vehicle Dynamics Control Mod...
U1046
DTC U1046 indicates a loss of communication with the ABS module.
U1047
U1047 indicates a communication error among control modules in your vehicle.
U1048
U1048 indicates a lost communication error between control modules.
U1049
U1049 indicates a communication failure between the vehicle's control modules.
U104A
U104A signifies a communication failure in the vehicle's control modules.
U104B
U104B indicates a loss of communication with the powertrain control module.
U104C
U104C indicates a communication failure between vehicle control modules.
U104D
DTC U104D indicates a communication issue with a control module in your vehicle.
U104E
DTC U104E indicates a communication fault with the body control module in you...
U104F
U104F indicates a transmission control module communication issue within the ...
U1050
U1050 indicates lost communication with a vehicle control module,
U1051
U1051 signifies a communication failure between vehicle control modules.
U1052
U1052 indicates a communication error between the ABS module and other contro...
U1053
U1053 indicates a communication failure between the Engine Control Module and...
U1054
U1054 indicates a communication failure between vehicle control modules.
U1055
U1055 indicates a communication error between vehicle control modules.
U1056
U1056 indicates a communication failure between the ECM and the fuel pump con...
U1057
U1057 indicates a communication error between vehicle modules.
U1058
U1058 indicates a communication failure between the ECM and FPCM,
U1059
U1059 indicates a communication error in the vehicle's network,
U105A
DTC U105A signifies a communication failure between control modules in your v...
U105B
U105B indicates a communication error between the vehicle's control module an...
U105C
U105C indicates a communication failure between the vehicle's control modules.
U105D
U105D indicates a communication issue between vehicle modules,
U105E
U105E indicates a communication error between control modules in your vehicle.
U105F
U105F indicates a communication error with the Instrument Cluster or BCM.
U1060
U1060 indicates a communication error between control modules in your vehicle.
U1061
U1061 refers to a communication error in the vehicle's control modules.
U1062
U1062 signifies a communication failure between the ECM and TCM in your vehicle.
U1063
U1063 indicates a communication failure within the vehicle’s network,
U1064
U1064 means there is a communication breakdown with the Body Control Module.
U1065
U1065 means there's a communication issue between vehicle control modules.
U1066
U1066 indicates a communication failure between control modules.
U1067
U1067 indicates a communication failure between vehicle modules.
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