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 4601-4700 of 8192 total codes
U1XXX Network Communication Systems
U11F8
U11F8 indicates a communication error between the hybrid control module and t...
U11F9
U11F9 indicates a communication error within the vehicle's control modules.
U11FA
The U11FA code indicates a communication issue between vehicle control modules.
U11FB
U11FB indicates a communication issue between the Body Control Module and Ins...
U11FC
U11FC indicates a communication failure in the Tire Pressure Monitoring Syste...
U11FD
U11FD indicates a communication error between vehicle control modules.
U11FE
The U11FE code indicates a communication fault within the vehicle's controlle...
U11FF
The U11FF code indicates a communication issue within the vehicle's electroni...
U1200
U1200 signifies a communication error between your vehicle's control modules.
U1201
U1201 signifies a fault in communication between the ECM and TCM,
U1202
U1202 indicates a communication error between vehicle control modules.
U1203
The U1203 code signifies a communication error between control modules in you...
U1204
U1204 indicates a communication error in the CAN bus system, preventing modul...
U1205
U1205 indicates a communication failure between vehicle control modules.
U1206
U1206 signifies a communication failure between vehicle control modules.
U1207
U1207 indicates a communication failure between vehicle modules.
U1208
U1208 is a communication error code indicating a failure in the vehicle's dat...
U1209
U1209 indicates a communication failure within the vehicle's control modules.
U120A
The U120A code signifies a communication problem between vehicle control modu...
U120B
U120B indicates a communication fault between vehicle modules,
U120C
The U120C code indicates a communication issue between the control modules in...
U120D
U120D indicates a communication failure between vehicle control modules.
U120E
U120E indicates a communication error between vehicle control modules.
U120F
U120F indicates a communication error between vehicle control units.
U1210
U1210 indicates a communication fault between vehicle control modules.
U1211
DTC U1211 indicates a communication error between vehicle control modules.
U1212
DTC U1212 refers to a communication issue between vehicle control modules.
U1213
U1213 signifies a communication failure within your vehicle's CAN bus system.
U1214
U1214 indicates a communication error between vehicle control modules,
U1215
U1215 indicates a communication failure between the vehicle's control modules...
U1216
U1216 indicates a communication fault within the vehicle's electronic control...
U1217
U1217 indicates a communication loss with the ABS control module.
U1218
U1218 indicates a communication failure between vehicle control modules.
U1219
DTC U1219 indicates a communication error between vehicle control modules,
U121A
U121A indicates a communication failure between vehicle control modules,
U121B
U121B indicates a communication failure between modules in the vehicle's netw...
U121C
U121C indicates a communication malfunction between vehicle control modules,
U121D
U121D indicates a communication failure between vehicle control modules.
U121E
U121E indicates a communication failure between vehicle control modules.
U121F
U121F indicates a communication issue between vehicle control modules.
U1220
U1220 indicates a communication failure in the vehicle's CAN bus system.
U1221
U1221 indicates a communication error between vehicle control modules.
U1222
U1222 indicates a communication error between the Powertrain Control Module a...
U1223
U1223 indicates a communication issue in the CAN bus system.
U1224
U1224 indicates a communication failure between the ECM and other control mod...
U1225
U1225 indicates a communication error between vehicle control modules.
U1226
DTC U1226 indicates a communication failure between control modules in your v...
U1227
U1227 indicates a communication error between vehicle control modules.
U1228
DTC U1228 indicates a communication error in the vehicle's network,
U1229
U1229 indicates a communication issue between vehicle control modules.
U122A
U122A indicates a communication malfunction between vehicle modules,
U122B
U122B indicates a communication error between vehicle modules,
U122C
The U122C code indicates a communication error between vehicle modules.
U122D
U122D indicates a communication error between vehicle modules.
U122E
U122E indicates a communication error between vehicle control modules.
U122F
U122F indicates a communication failure between vehicle control modules.
U1230
U1230 signifies a communication error between control modules in your vehicle.
U1231
U1231 indicates a CAN bus communication failure among vehicle control modules.
U1232
U1232 indicates a communication error between vehicle control modules.
U1233
U1233 indicates a communication fault between control modules in your vehicle.
U1234
The diagnostic trouble code (DTC) U1234 indicates a communication issue withi...
U1235
U1235 indicates a communication failure between vehicle modules.
U1236
U1236 indicates a communication error in the vehicle's control modules.
U1237
U1237 indicates a communication failure between the ABS module and the PCM.
U1238
U1238 indicates a communication error between control modules,
U1239
U1239 indicates a communication issue within the vehicle's control modules.
U123A
U123A indicates a communication error between vehicle control modules.
U123B
U123B indicates a communication error between control modules in your vehicle.
U123C
U123C indicates a communication issue within the vehicle's network,
U123D
U123D indicates a communication failure between control modules in your vehicle.
U123E
U123E indicates a communication failure with the steering angle sensor.
U123F
U123F indicates a lost communication issue with a vehicle control module.
U1240
Indicates one of the control modules is unable to communicate properly with a...
U1241
U1241 indicates a loss of communication between the body control module and o...
U1242
U1242 indicates a communication failure between the ECM and the instrument pa...
U1243
DTC U1243 indicates a communication fault in the vehicle's network,
U1244
U1244 refers to a communication error in the vehicle's CAN bus system.
U1245
U1245 indicates a communication failure among vehicle control modules.
U1246
U1246 indicates a communication error between vehicle control modules.
U1247
U1247 indicates a communication error between your vehicle's control modules.
U1248
DTC U1248 indicates a communication issue between your vehicle's control modu...
U1249
DTC U1249 indicates a communication loss with the Body Control Module.
U124A
U124A signals a communication failure between the Instrument Cluster and othe...
U124B
U124B signals a communication issue between vehicle control modules.
U124C
U124C indicates a loss of communication with the Body Control Module in your ...
U124D
U124D indicates a communication issue within the vehicle's network.
U124E
U124E indicates a communication fault between control modules in your vehicle.
U124F
The U124F code indicates a loss of communication with the satellite communica...
U1250
U1250 means there is a communication error between the vehicle's control modu...
U1251
U1251 indicates a communication error between vehicle modules.
U1252
U1252 indicates a communication error in the vehicle's network.
U1253
U1253 indicates a communication failure within the vehicle's electronic network.
U1254
DTC U1254 indicates a communication failure between the ABS module and the PCM.
U1255
The U1255 code signifies a communication error within the vehicle's data bus,...
U1256
DTC U1256 indicates a communication error between the vehicle's ECM and other...
U1257
U1257 indicates a communication error between control modules in your vehicle.
U1258
U1258 indicates a communication error within the vehicle's control modules.
U1259
U1259 indicates a communication fault within the vehicle's control modules.
U125A
U125A indicates a communication problem between control modules in your vehicle.
U125B
U125B indicates a communication error between vehicle modules.
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