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 6501-6600 of 8192 total codes
U1XXX Network Communication Systems
U1964
DTC U1964 indicates a communication failure within the vehicle's control modu...
U1965
U1965 indicates a communication error with the Body Control Module in certain...
U1966
DTC U1966 indicates a communication error between vehicle modules.
U1967
U1967 indicates a communication error in the vehicle's control modules,
U1968
U1968 indicates a communication error between vehicle control modules,
U1969
DTC U1969 indicates a communication fault between vehicle control modules.
U196A
U196A indicates a communication failure between the Body Control Module and o...
U196B
U196B indicates a communication issue in the vehicle's network,
U196C
U196C indicates a communication fault in the vehicle's CAN bus system.
U196D
U196D indicates a communication issue within the vehicle's network,
U196E
U196E indicates a communication error in the vehicle's network.
U196F
U196F indicates a communication failure between vehicle control modules.
U1970
U1970 indicates a communication error between hybrid vehicle control modules.
U1971
DTC U1971 indicates a communication failure between control modules in your v...
U1972
U1972 indicates a communication issue within the vehicle's network,
U1973
DTC U1973 indicates a communication error between the vehicle's control modules.
U1974
U1974 indicates a loss of communication between vehicle modules,
U1975
DTC U1975 indicates a communication failure between control modules in your v...
U1976
U1976 indicates a communication issue in the hybrid powertrain control module.
U1977
U1977 indicates a communication failure between electronic control units in t...
U1978
U1978 indicates a communication failure between the powertrain control module...
U1979
U1979 signifies a communication error in the vehicle's network,
U197A
Indicates a communication issue between the powertrain control module (PCM) a...
U197B
U197B indicates a communication error in the ABS control module.
U197C
U197C indicates a communication error between vehicle control modules.
U197D
U197D indicates a communication issue within the vehicle's electronic system,...
U197E
DTC U197E signals a communication error between control modules in your vehic...
U197F
U197F indicates a communication issue within the vehicle's network,
U1980
DTC U1980 indicates a communication error between control modules in your veh...
U1981
DTC U1981 indicates a communication failure between control modules,
U1982
U1982 indicates a communication issue within the vehicle's communication netw...
U1983
DTC U1983 signifies a communication issue between modules in your vehicle’s n...
U1984
U1984 indicates a communication error between the BCM and other control modules.
U1985
U1985 indicates a communication error between vehicle control modules.
U1986
U1986 indicates a communication bus fault within the vehicle's network,
U1987
U1987 indicates a communication fault in the vehicle's CAN bus.
U1988
U1988 indicates a communication error between electronic control units in you...
U1989
U1989 indicates a communication problem between vehicle control modules.
U198A
The U198A code indicates a communication loss between vehicle control modules.
U198B
U198B indicates a communication malfunction within the vehicle's network,
U198C
U198C indicates a communication failure with the Body Control Module (BCM).
U198D
The U198D code indicates a communication failure between modules.
U198E
U198E indicates a communication error within the vehicle's network,
U198F
U198F indicates a communication error between vehicle modules.
U1990
U1990 indicates a lost communication issue among vehicle control modules.
U1991
U1991 indicates a communication fault in the vehicle's data bus system.
U1992
U1992 indicates a communication problem within the vehicle's network,
U1993
U1993 indicates a communication failure between the Vehicle Control Unit and ...
U1994
U1994 indicates a communication problem in the CAN bus system.
U1995
U1995 indicates a communication failure between vehicle control modules,
U1996
The U1996 code signifies a communication error in the vehicle's network,
U1997
DTC U1997 indicates a problem with communication between vehicle control modu...
U1998
U1998 indicates a communication fault between vehicle control modules.
U1999
DTC U1999 indicates a communication issue between vehicle control modules.
U199A
U199A indicates a communication error within your vehicle's onboard systems.
U199B
U199B indicates a communication failure between vehicle modules,
U199C
The U199C code indicates a communication failure between vehicle modules.
U199D
U199D indicates a lost communication between the control modules in your vehi...
U199E
U199E signifies a communication error between modules in your vehicle's system.
U199F
U199F indicates a communication error between vehicle control modules.
U19A0
U19A0 indicates a communication failure in the vehicle's ADAS network.
U19A1
U19A1 indicates a communication issue between the control modules in your veh...
U19A2
U19A2 indicates a communication failure in the vehicle's electronic systems.
U19A3
U19A3 indicates a communication error in the vehicle's network,
U19A4
U19A4 indicates a communication error between vehicle control modules.
U19A5
U19A5 indicates a communication error between vehicle control modules.
U19A6
U19A6 indicates a network communication issue between vehicle modules.
U19A7
U19A7 indicates a communication fault between ECUs, often linked to network f...
U19A8
DTC U19A8 indicates a communication failure between the vehicle's control mod...
U19A9
U19A9 indicates a communication error between control modules in the vehicle'...
U19AA
U19AA indicates a communication error between the body control module and oth...
U19AB
U19AB indicates a communication error in the vehicle's control systems,
U19AC
U19AC indicates a communication issue with the vehicle's advanced systems.
U19AD
U19AD indicates a communication issue between vehicle control modules.
U19AE
U19AE indicates a communication error in your vehicle's network,
U19AF
U19AF indicates a communication issue between vehicle modules,
U19B0
Indicates a communication issue within the vehicle’s network, specifically re...
U19B1
U19B1 indicates a communication error in the battery management system.
U19B2
Indicates underlying issues that need immediate attention.
U19B3
The U19B3 code indicates a communication issue within the vehicle's control m...
U19B4
U19B4 indicates a communication error in the vehicle's network,
U19B5
U19B5 indicates a communication failure within the vehicle's network,
U19B6
U19B6 indicates a communication failure between vehicle control modules.
U19B7
U19B7 indicates a communication error within the vehicle's network,
U19B8
U19B8 indicates a communication error between vehicle control modules,
U19B9
DTC U19B9 indicates a communication error between the battery monitor and the...
U19BA
U19BA indicates a communication error within the vehicle's control modules.
U19BB
U19BB indicates a communication issue between vehicle control modules.
U19BC
U19BC indicates a communication failure between the Body Control Module and o...
U19BD
The U19BD code indicates a communication failure between the body control mod...
U19BE
The U19BE code indicates a communication error between vehicle modules,
U19BF
U19BF indicates a communication error between vehicle control modules.
U19C0
U19C0 is a communication error code indicating a problem between the Body Con...
U19C1
U19C1 indicates a communication fault in the vehicle's data bus.
U19C2
U19C2 indicates a communication fault between the vehicle's modules.
U19C3
U19C3 indicates a communication error within the vehicle's electronic systems...
U19C4
U19C4 indicates a communication problem between the Body Control Module and t...
U19C5
U19C5 indicates a communication error between vehicle control modules.
U19C6
U19C6 indicates a communication issue within the vehicle's network systems.
U19C7
U19C7 indicates a communication issue within the vehicle's control modules,
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