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 4801-4900 of 8192 total codes
U1XXX Network Communication Systems
U12C0
U12C0 indicates a communication failure between vehicle control modules.
U12C1
U12C1 signifies a communication fault between vehicle control modules.
U12C2
U12C2 signifies a communication failure between the BCM and PCM,
U12C3
The U12C3 code indicates a communication error between the vehicle's electron...
U12C4
U12C4 indicates a communication issue between the Powertrain Control Module a...
U12C5
Indicates the VCM has detected a disruption in communication with other modul...
U12C6
DTC U12C6 signifies a communication issue between control modules in your veh...
U12C7
U12C7 indicates a communication error between control modules related to vehi...
U12C8
U12C8 indicates a communication fault between the PCM and other control modul...
U12C9
U12C9 indicates a communication error between vehicle modules.
U12CA
U12CA signifies a communication error between vehicle control modules.
U12CB
The U12CB code indicates a communication error between vehicle control modules.
U12CC
U12CC indicates a communication fault between the body control module and oth...
U12CD
DTC U12CD indicates a communication issue within the vehicle's control modules.
U12CE
U12CE indicates a communication error in the vehicle's system,
U12CF
U12CF indicates a communication failure between vehicle control modules,
U12D0
U12D0 indicates a communication fault between the central gateway module and ...
U12D1
The U12D1 code indicates a communication issue between vehicle control module...
U12D2
U12D2 indicates a communication error between vehicle control modules.
U12D3
U12D3 indicates a communication error within the vehicle's CAN bus system.
U12D4
U12D4 indicates a communication problem between control modules in your vehicle.
U12D5
U12D5 means there's a communication error in your vehicle's control modules.
U12D6
U12D6 indicates a communication error within the hybrid control system.
U12D7
U12D7 signifies a communication failure between vehicle control modules,
U12D8
U12D8 indicates a communication error in the vehicle's electronic systems.
U12D9
U12D9 indicates a communication error between control modules.
U12DA
U12DA indicates a communication fault in the vehicle's network,
U12DB
U12DB indicates a communication failure between the Body Control Module and o...
U12DC
U12DC indicates a communication error between vehicle control modules.
U12DD
The U12DD code indicates a communication failure between the steering angle s...
U12DE
U12DE indicates a communication failure between the ECU and TCM.
U12DF
U12DF indicates a communication failure in the Body Control Module network.
U12E0
U12E0 indicates a communication failure between vehicle modules.
U12E1
U12E1 indicates a communication error between your vehicle's control modules.
U12E2
U12E2 signifies a communication error within the vehicle's network,
U12E3
U12E3 indicates a communication error between the Body Control Module and oth...
U12E4
U12E4 indicates a communication error between vehicle control modules,
U12E5
U12E5 indicates a communication failure between vehicle control modules,
U12E6
U12E6 indicates a communication failure in the vehicle's CAN bus system.
U12E7
U12E7 indicates a communication error between vehicle control modules,
U12E8
U12E8 indicates a communication error among vehicle control modules.
U12E9
The DTC code U12E9 indicates a communication issue within the vehicle's netwo...
U12EA
U12EA indicates a communication failure between vehicle control modules.
U12EB
U12EB is a communication error between the body control module and engine con...
U12EC
U12EC indicates a communication fault between vehicle control modules.
U12ED
The U12ED code signifies a communication error between vehicle control module...
U12EE
U12EE indicates a communication error between the Hybrid Control Unit and the...
U12EF
U12EF indicates a communication error between vehicle control modules.
U12F0
The U12F0 code indicates a communication error between vehicle control modules.
U12F1
DTC U12F1 indicates a communication fault in the vehicle's control modules.
U12F2
U12F2 indicates a communication malfunction between control modules in your v...
U12F3
U12F3 indicates a communication failure between the body control module and o...
U12F4
The U12F4 code indicates a communication problem between control modules in y...
U12F5
U12F5 indicates a communication problem within the vehicle's control modules.
U12F6
U12F6 indicates a communication issue between control modules in your vehicle.
U12F7
U12F7 indicates a communication circuit malfunction between the Body Control ...
U12F8
U12F8 is a communication error code indicating a failure in the vehicle's com...
U12F9
U12F9 indicates a communication failure within the vehicle's CAN bus.
U12FA
U12FA indicates a communication issue between vehicle control modules,
U12FB
The U12FB code indicates a communication error between the transmission contr...
U12FC
Indicates a malfunction within the vehicle's network, particularly with the h...
U12FD
U12FD signifies a communication failure between the ECM and TCM.
U12FE
U12FE indicates a communication error between control modules in your vehicle.
U12FF
The U12FF code is a diagnostic trouble code that typically indicates a proble...
U1300
U1300 indicates a communication bus issue within the vehicle's electronic sys...
U1301
U1301 indicates a communication issue between the vehicle's modules.
U1302
U1302 indicates a communication error in the vehicle's network system.
U1303
U1303 signifies a communication failure between vehicle control modules.
U1304
U1304 indicates a communication error in the vehicle's CAN network,
U1305
U1305 indicates a communication fault in the vehicle's data bus system.
U1306
U1306 indicates a communication failure between your vehicle's modules.
U1307
U1307 indicates a communication issue in the CAN bus system of your vehicle.
U1308
U1308 indicates a communication error between vehicle control modules.
U1309
U1309 indicates a communication failure within the vehicle's network,
U130A
U130A means there's a communication issue between control modules in your veh...
U130B
U130B indicates a communication error between vehicle control modules.
U130C
U130C indicates a communication issue in the vehicle's network,
U130D
U130D indicates a communication issue between vehicle modules.
U130E
U130E indicates a communication fault within the vehicle's network,
U130F
U130F indicates a communication failure in the vehicle's control modules.
U1310
U1310 indicates a communication error between vehicle modules.
U1311
U1311 indicates a communication error between vehicle modules.
U1312
U1312 indicates a communication fault in the vehicle's network,
U1313
U1313 indicates a communication error between the ABS module and the powertra...
U1314
U1314 indicates a communication error in the vehicle's module network.
U1315
U1315 indicates a communication error between control modules,
U1316
DTC U1316 indicates a communication failure between vehicle modules.
U1317
U1317 indicates a communication error between vehicle control modules.
U1318
U1318 indicates a network communication error within your vehicle's modules.
U1319
U1319 signifies a communication error between control modules,
U131A
U131A indicates a communication error between vehicle modules.
U131B
U131B indicates a communication fault between vehicle control modules.
U131C
U131C indicates a communication error within the vehicle's electronic control...
U131D
U131D is a communication error code indicating issues between vehicle control...
U131E
U131E indicates a communication error between vehicle modules.
U131F
U131F indicates a communication error between vehicle control modules,
U1320
DTC U1320 indicates a communication issue among the vehicle's control modules.
U1321
U1321 indicates a communication error within the vehicle's ABS or ESC modules.
U1322
Indicates an issue with the vehicle's communication network, specifically a '...
U1323
U1323 indicates a communication fault within the vehicle's network.
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