U CODE FAMILY
Network code references — Page 2.
Communication and network diagnostic references. A communication code does not identify a failed module by itself.
Generic OBD-II
U008F
Vehicle Communication Bus G (-) Low
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Generic OBD-II
U0090
Vehicle Communication Bus G (-) High
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Generic OBD-II
U0091
Vehicle Communication Bus G (-) shorted to Bus G (+)
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Generic OBD-II
U0092
Vehicle Communication Bus H
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Generic OBD-II
U0093
Vehicle Communication Bus H Performance
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Generic OBD-II
U0094
Vehicle Communication Bus H (+) Open
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Generic OBD-II
U0095
Vehicle Communication Bus H (+) Low
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Generic OBD-II
U0096
Vehicle Communication Bus H (+) High
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Generic OBD-II
U0097
Vehicle Communication Bus H (-) Open
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Generic OBD-II
U0098
Vehicle Communication Bus H (-) Low
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Generic OBD-II
U0099
Vehicle Communication Bus H (-) High
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Generic OBD-II
U009A
Vehicle Communication Bus H (-) shorted to Bus H (+)
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Generic OBD-II
U009B
Vehicle Communication Bus I
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Generic OBD-II
U009C
Vehicle Communication Bus I Performance
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Generic OBD-II
U009D
Vehicle Communication Bus J
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Generic OBD-II
U009E
Vehicle Communication Bus J Performance
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Generic OBD-II
U0100
Lost Communication With ECM/PCM A
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Generic OBD-II
U0101
Lost Communication With TCM
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Generic OBD-II
U0102
Lost Communication With Transfer Case Control Module
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Generic OBD-II
U0103
Lost Communication With Gear Shift Control Module A
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Generic OBD-II
U0104
Lost Communication With Cruise Control Module
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Generic OBD-II
U0105
Lost Communication With Fuel Injector Control Module
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Generic OBD-II
U0106
Lost Communication With Glow Plug Control Module 1
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Generic OBD-II
U0107
Lost Communication With Throttle Actuator A Control Module
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Generic OBD-II
U0108
Lost Communication With Alternative Fuel Control Module
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Generic OBD-II
U0109
Lost Communication With Fuel Pump Control Module A
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Generic OBD-II
U010A
Lost Communication With Exhaust Gas Recirculation Control Module A
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Generic OBD-II
U010B
Lost Communication With Exhaust Gas Recirculation Control Module B
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Generic OBD-II
U010C
Lost Communication With Turbocharger/Supercharger Control Module A
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Generic OBD-II
U010D
Lost Communication With Turbocharger/Supercharger Control Module B
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Generic OBD-II
U010E
Lost Communication With Reductant Control Module
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Generic OBD-II
U010F
Lost Communication With Air Conditioning Control Module
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Generic OBD-II
U0110
Lost Communication With Drive Motor Control Module A
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Generic OBD-II
U0111
Lost Communication With Battery Energy Control Module A
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Generic OBD-II
U0112
Lost Communication With Battery Energy Control Module B
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Generic OBD-II
U0113
Lost Communication With Emissions Critical Control Information
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Generic OBD-II
U0114
Lost Communication With Four-Wheel Drive Clutch Control Module
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Generic OBD-II
U0115
Lost Communication With ECM/PCM B
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Generic OBD-II
U0116
Lost Communication With Coolant Temperature Control Module
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Generic OBD-II
U0117
Lost Communication With PTO Control Module
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Generic OBD-II
U0118
Lost Communication With Fuel Additive Control Module
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Generic OBD-II
U0119
Lost Communication With Fuel Cell Control Module
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Generic OBD-II
U011A
Lost Communication With Exhaust Gas Sensor Module A
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Generic OBD-II
U011B
Lost Communication With Rocker Arm Control Module A
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Generic OBD-II
U011C
Lost Communication With Rocker Arm Control Module B
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Generic OBD-II
U011D
Lost Communication With All Wheel Drive Control Module
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Generic OBD-II
U011E
Lost Communication With Throttle Actuator B Control Module
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Generic OBD-II
U011F
Lost Communication With V2X Module
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Generic OBD-II
U0120
Lost Communication With Starter / Generator Control Module
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Generic OBD-II
U0121
Lost Communication With Anti-Lock Brake System (ABS) Control Module A
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Generic OBD-II
U0122
Lost Communication With Vehicle Dynamics Control Module
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Generic OBD-II
U0123
Lost Communication With Yaw Rate Sensor Module
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Generic OBD-II
U0124
Lost Communication With Lateral Acceleration Sensor Module
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Generic OBD-II
U0125
Lost Communication With Multi-axis Acceleration Sensor Module A
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Generic OBD-II
U0126
Lost Communication With Steering Angle Sensor Module
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Generic OBD-II
U0127
Lost Communication With Tire Pressure Monitor Module
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Generic OBD-II
U0128
Lost Communication With Park Brake Control Module
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Generic OBD-II
U0129
Lost Communication With Brake System Control Module A
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Generic OBD-II
U012A
Lost Communication With Chassis Control Module A
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Generic OBD-II
U012B
Lost Communication With Chassis Control Module B
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Generic OBD-II
U012C
Lost Communication With Active Vibration Control Module
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Generic OBD-II
U012D
Lost Communication With Generator A Control Module
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Generic OBD-II
U012E
Lost Communication With Camshaft Position Control Module
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Generic OBD-II
U012F
Lost Communication With Generator B Control Module
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Generic OBD-II
U0130
Lost Communication With Steering Effort Control Module
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Generic OBD-II
U0131
Lost Communication With Power Steering Control Module A
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Generic OBD-II
U0132
Lost Communication With Suspension Control Module A
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Generic OBD-II
U0133
Lost Communication With Active Roll Control Module
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Generic OBD-II
U0134
Lost Communication With Power Steering Control Module - Rear
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Generic OBD-II
U0135
Lost Communication With Differential Control Module - Front
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Generic OBD-II
U0136
Lost Communication With Differential Control Module - Rear
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Generic OBD-II
U0137
Lost Communication With Trailer Brake Control Module
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Generic OBD-II
U0138
Lost Communication With All Terrain Control Module
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Generic OBD-II
U0139
Lost Communication With Suspension Control Module B
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Generic OBD-II
U013C
Lost Communication With Accelerator Pedal Module
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Generic OBD-II
U013D
Lost Communication With Vacuum Sensor A
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Generic OBD-II
U013E
Lost Communication With Vacuum Sensor B
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Generic OBD-II
U013F
Lost Communication With Pedestrian Alert Control Module
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Generic OBD-II
U0140
Lost Communication With Body Control Module
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Generic OBD-II
U0141
Lost Communication With Body Control Module A
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Generic OBD-II
U0142
Lost Communication With Body Control Module B
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Generic OBD-II
U0143
Lost Communication With Body Control Module C
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Generic OBD-II
U0144
Lost Communication With Body Control Module D
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Generic OBD-II
U0145
Lost Communication With Body Control Module E
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Generic OBD-II
U0146
Lost Communication With Serial Data Gateway Module A
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Generic OBD-II
U0147
Lost Communication With Serial Data Gateway Module B
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Generic OBD-II
U0148
Lost Communication With Serial Data Gateway Module C
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Generic OBD-II
U0149
Lost Communication With Serial Data Gateway Module D
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Generic OBD-II
U014A
Lost Communication With Battery Energy Control Module C
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Generic OBD-II
U014B
Lost Communication With Hybrid/EV Battery Inductive Charging Module
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Generic OBD-II
U014C
Lost Communication With Battery Energy Control Module D
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Generic OBD-II
U014D
Lost Communication with Mirror Control Module B
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Generic OBD-II
U014E
Lost Communication With Multi-axis Acceleration Sensor Module B
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Generic OBD-II
U0150
Lost Communication With Serial Data Gateway Module E
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Generic OBD-II
U0151
Lost Communication With Restraints Control Module
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Generic OBD-II
U0152
Lost Communication With Side Restraints Control Module - Left
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Generic OBD-II
U0153
Lost Communication With Side Restraints Control Module - Right
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Generic OBD-II
U0154
Lost Communication With Restraints Occupant Classification System Module
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Generic OBD-II
U0155
Lost Communication With Instrument Panel Cluster (IPC) Control Module
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Generic OBD-II
U0156
Lost Communication With Information Center A
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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.