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 4701-4800 of 8192 total codes
U1XXX Network Communication Systems
U125C
U125C indicates a communication error between your hybrid control module and ...
U125D
U125D indicates a communication failure between vehicle control modules.
U125E
DTC U125E indicates a communication failure between vehicle control modules.
U125F
U125F indicates a communication failure between vehicle modules.
U1260
The U1260 code indicates a communication issue between vehicle modules.
U1261
U1261 indicates a communication error in GM vehicles, impacting module intera...
U1262
U1262 indicates a communication issue within the vehicle's network modules,
U1263
DTC U1263 signifies a communication failure among vehicle modules,
U1264
U1264 indicates a communication issue between your car's Engine Control Modul...
U1265
DTC U1265 indicates a communication failure between the engine control module...
U1266
U1266 signals a communication issue in the vehicle's electrical network.
U1267
U1267 indicates a communication error in the CAN bus system, affecting module...
U1268
U1268 indicates a communication error within the vehicle's control modules.
U1269
U1269 indicates a communication failure between vehicle control modules,
U126A
U126A indicates a communication error in the vehicle's network,
U126B
U126B indicates a communication error in your vehicle's network,
U126C
U126C indicates a communication failure between the ECM and HPCM in hybrid ve...
U126D
U126D indicates a communication failure between the ECM and other modules in ...
U126E
The U126E code indicates a communication error within the vehicle's control m...
U126F
The U126F code indicates a communication loss between the Engine Control Modu...
U1270
U1270 indicates a communication error between vehicle control modules,
U1271
U1271 is a communication error code indicating a problem in the vehicle's net...
U1272
U1272 indicates a communication error within the vehicle's network,
U1273
U1273 indicates that there's a communication issue between the engine control...
U1274
U1274 indicates a communication error within the vehicle's control modules.
U1275
U1275 indicates a communication error between control modules in your vehicle.
U1276
U1276 signifies a communication error in the vehicle's network,
U1277
U1277 indicates a communication error within the vehicle's network,
U1278
U1278 indicates a communication error between vehicle modules,
U1279
The U1279 code indicates a communication failure between control modules in y...
U127A
The U127A code signifies a communication failure among the vehicle's control ...
U127B
U127B indicates a communication failure between control modules in your vehicle.
U127C
U127C indicates a communication failure between vehicle control modules.
U127D
U127D indicates a communication error in your vehicle's network,
U127E
U127E indicates a communication failure between control modules in your vehicle.
U127F
U127F indicates a communication error between vehicle modules,
U1280
U1280 indicates a communication error between vehicle control modules.
U1281
U1281 indicates a communication failure in the vehicle’s CAN system,
U1282
U1282 indicates a communication failure between vehicle modules.
U1283
U1283 indicates a communication error between vehicle control modules.
U1284
DTC U1284 indicates a communication issue between vehicle modules.
U1285
DTC U1285 indicates a communication failure in your vehicle's control modules.
U1286
U1286 indicates a communication error between vehicle control modules.
U1287
DTC U1287 indicates a communication error between vehicle control modules.
U1288
U1288 signifies a communication problem in your vehicle's data network,
U1289
U1289 signifies a communication failure between vehicle control modules,
U128A
U128A indicates a communication issue between vehicle control modules.
U128B
U128B indicates a communication failure between the PCM and other control mod...
U128C
U128C indicates a communication issue between vehicle modules,
U128D
DTC U128D indicates a communication failure in your vehicle's network.
U128E
U128E indicates a communication error between vehicle control modules.
U128F
U128F indicates a communication issue between the Body Control Module and oth...
U1290
U1290 indicates a communication failure between control modules in your vehicle.
U1291
DTC U1291 indicates a communication failure between the Body Control Module a...
U1292
U1292 signifies a communication error in the CAN bus system.
U1293
U1293 indicates a communication error between vehicle control modules,
U1294
DTC U1294 indicates a communication issue within the vehicle's control modules.
U1295
DTC U1295 indicates a lost communication with the A/C control module.
U1296
Indicates a communication issue between the engine control module (ECM) and o...
U1297
U1297 indicates a communication error between vehicle modules,
U1298
U1298 indicates a communication error between modules in the vehicle.
U1299
U1299 indicates lost communication between vehicle control modules.
U129A
U129A indicates a communication issue in the vehicle's control modules.
U129B
U129B indicates a communication error between control modules,
U129C
U129C indicates a lost communication with the Battery Energy Control Module.
U129D
The U129D code signifies a communication error within your vehicle's control ...
U129E
U129E indicates a communication loss between the Engine Control Module and Hy...
U129F
U129F indicates a communication error between modules in your vehicle's network.
U12A0
U12A0 indicates a communication issue between vehicle control modules.
U12A1
U12A1 indicates a communication error between vehicle control modules.
U12A2
U12A2 indicates a communication error between vehicle control modules.
U12A3
U12A3 indicates a communication issue among the vehicle's control modules.
U12A4
U12A4 indicates a communication fault between vehicle modules.
U12A5
U12A5 indicates a communication error between vehicle control modules.
U12A6
U12A6 indicates a communication failure in the vehicle's control modules.
U12A7
U12A7 indicates a communication error between vehicle control modules.
U12A8
U12A8 indicates a communication issue between the ECM and battery monitoring ...
U12A9
U12A9 indicates a communication issue between vehicle control modules.
U12AA
U12AA code indicates a communication issue between vehicle control modules.
U12AB
U12AB indicates a communication error between control modules in your vehicle.
U12AC
U12AC indicates a communication error among vehicle control modules.
U12AD
U12AD indicates a communication failure between vehicle control modules.
U12AE
DTC U12AE indicates a communication fault between the steering control module...
U12AF
DTC U12AF indicates a communication problem between vehicle control modules.
U12B0
U12B0 indicates a communication error between vehicle control modules.
U12B1
U12B1 indicates a communication error in the vehicle's CAN system.
U12B2
U12B2 indicates a communication error between control modules in your vehicle...
U12B3
DTC U12B3 indicates a communication issue between vehicle control modules.
U12B4
U12B4 indicates a communication error between vehicle control modules.
U12B5
U12B5 indicates a communication failure between vehicle control modules.
U12B6
U12B6 indicates a communication error between vehicle control modules.
U12B7
U12B7 indicates a communication failure between vehicle modules.
U12B8
U12B8 indicates a communication failure between vehicle control modules.
U12B9
U12B9 indicates a communication error between control modules in your vehicle...
U12BA
U12BA indicates a communication issue between vehicle control modules.
U12BB
U12BB indicates a communication error in the Body Control Module.
U12BC
U12BC indicates a communication issue between the ABS module and the vehicle'...
U12BD
U12BD indicates a failure in the vehicle's communication network,
U12BE
The U12BE code indicates a communication error between the Body Control Modul...
U12BF
U12BF indicates a communication error between vehicle modules.
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