U CODE FAMILY
Network code references — Page 5.
Communication and network diagnostic references. A communication code does not identify a failed module by itself.
Generic OBD-II
U0273
Lost Communication With Lighting Driver Control Module “A”
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Generic OBD-II
U0274
Lost Communication With Lighting Driver Control Module “B”
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Generic OBD-II
U0275
Lost Communication With Lighting Driver Control Module “C”
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Generic OBD-II
U0276
Lost Communication With Lighting Driver Control Module “D”
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Generic OBD-II
U0277
Lost Communication With Seat Control Module K
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Generic OBD-II
U0278
Lost Communication With Seat Control Module L
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Generic OBD-II
U0279
Lost Communication with Haptic Control Module
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Generic OBD-II
U027A
Lost Communication With Battery Charger Control Module C
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Generic OBD-II
U027B
Lost Communication with Battery Charger Control Module D
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Generic OBD-II
U027C
Lost Communication With Off-Board Charger Control Module
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Generic OBD-II
U0284
Lost Communication With Active Grille Air Shutter Module A
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Generic OBD-II
U0285
Lost Communication With Active Grille Air Shutter Module B
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Generic OBD-II
U0286
Lost Communication With Radiator Anti Tamper Device
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Generic OBD-II
U0287
Lost Communication With Transmission Fluid Pump Module A
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Generic OBD-II
U0288
Lost Communication With DC/AC Converter Control Module A
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Generic OBD-II
U0289
Lost Communication With DC/AC Converter Control Module B
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Generic OBD-II
U028A
Lost Communication With Transmission Fluid Pump Module B
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Generic OBD-II
U028B
Lost Communication With Active Grille Air Shutter Module C
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Generic OBD-II
U028C
Lost Communication With Active Grille Air Shutter Module D
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Generic OBD-II
U028D
Lost Communication with Active Aerodynamic Feature Control Module A
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Generic OBD-II
U028E
Lost Communication with Active Aerodynamic Feature Control Module B
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Generic OBD-II
U028F
Lost Communication with Active Aerodynamic Feature Control Module C
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Generic OBD-II
U0290
Lost Communication with Active Aerodynamic Feature Control Module D
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Generic OBD-II
U0291
Lost Communication With Gear Shift Control Module B
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Generic OBD-II
U0292
Lost Communication With Drive Motor Control Module B
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Generic OBD-II
U0293
Lost Communication With Hybrid/EV Powertrain Control Module
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Generic OBD-II
U0294
Lost Communication With Powertrain Control Monitor Module
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Generic OBD-II
U0295
Lost Communication With AC/AC Converter Control Module
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Generic OBD-II
U0296
Lost Communication With AC/DC Converter Control Module A
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Generic OBD-II
U0297
Lost Communication With AC/DC Converter Control Module B
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Generic OBD-II
U0298
Lost Communication With DC/DC Converter Control Module A
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Generic OBD-II
U0299
Lost Communication With DC/DC Converter Control Module B
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Generic OBD-II
U029A
Lost Communication With Hybrid/EV Battery Pack Sensor Module
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Generic OBD-II
U029B
Lost Communication With Drive Motor Control Module C
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Generic OBD-II
U029C
Lost Communication With Drive Motor Control Module D
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Generic OBD-II
U029D
Lost Communication With NOx Sensor A
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Generic OBD-II
U029E
Lost Communication With NOx Sensor B
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Generic OBD-II
U029F
Lost Communication With Evaporative Emission System Leak Detection Control Module
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Generic OBD-II
U02A0
Invalid Data Received From Hybrid/EV Battery Interface Control Module D
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Generic OBD-II
U02A1
Lost Communication With NOx Sensor C
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Generic OBD-II
U02A2
Lost Communication With Reductant Quality Module
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Generic OBD-II
U02A3
Lost Communication With Particulate Matter Sensor
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Generic OBD-II
U02A4
Lost Communication With NH3 Sensor
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Generic OBD-II
U02A5
Lost Communication With Reductant Heater Control Module
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Generic OBD-II
U02A6
Lost Communication With Safety Integration Control Module
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Generic OBD-II
U02A7
Lost Communication With Engine Sound Control 1
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Generic OBD-II
U02A8
Lost Communication With Engine Sound Control 2
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Generic OBD-II
U02A9
Lost Communication With Charge Air Cooler Coolant Pump A
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Generic OBD-II
U02AA
Lost Communication With Engine Disconnect Clutch
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Generic OBD-II
U02AB
Lost Communication With Vehicle Thermal Management Control Module
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Generic OBD-II
U02AC
Lost Communication With Turbocharger/Supercharger Boost Control A
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Generic OBD-II
U02AD
Lost Communication With Turbocharger/Supercharger Boost Control B
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Generic OBD-II
U02AE
Lost Communications With Hybrid/EV Battery Coolant Pump
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Generic OBD-II
U02AF
Lost Communication With Turbocharger Turbine Inlet Valve Position Sensor
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Generic OBD-II
U02B0
Lost Communication With Turbocharger/Supercharger Boost Control B Position Sensor
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Generic OBD-II
U02B1
Lost Communication With Comfort and Convenience Display A
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Generic OBD-II
U02B2
Lost Communication With Comfort and Convenience Display B
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Generic OBD-II
U02B3
Lost Communication With Driver Monitoring System Module
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Generic OBD-II
U02B4
Lost Communication With Front Radar Module A
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Generic OBD-II
U02B5
Lost Communication With Front Radar Module B
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Generic OBD-II
U02B6
Lost Communication With Rear Radar Module A
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Generic OBD-II
U02B7
Lost Communication With Rear Radar Module B
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Generic OBD-II
U02B8
Lost Communication With Rear Radar Module C
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Generic OBD-II
U02B9
Lost Communication With Rear Radar Module D
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Generic OBD-II
U02BA
Lost Communication With Hybrid/EV Electronics Coolant Pump B
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Generic OBD-II
U02BB
Lost Communications with EVAP System Purge Pump
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Generic OBD-II
U02BC
Lost Communication With Localization and Mapping Module
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Generic OBD-II
U02BD
Lost Communication With Night Vision Control Module
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Generic OBD-II
U02BE
Lost Communication With Trailer Backup Assist Control Module
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Generic OBD-II
U02BF
Lost Communication With Interior Lighting Control Module B
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Generic OBD-II
U02C0
Lost Communication With Active Radiator Air Flow Control Module A
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Generic OBD-II
U02C1
Lost Communication With Hybrid/EV Electronics Coolant Pump C
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Generic OBD-II
U0300
Internal Control Module Software Incompatibility
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Generic OBD-II
U0301
Software Incompatibility With ECM/PCM
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Generic OBD-II
U0302
Software Incompatibility With Transmission Control Module
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Generic OBD-II
U0303
Software Incompatibility With Transfer Case Control Module
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Generic OBD-II
U0304
Software Incompatibility With Gear Shift Control Module A
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Generic OBD-II
U0305
Software Incompatibility With Cruise Control Module
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Generic OBD-II
U0306
Software Incompatibility With Fuel Injector Control Module
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Generic OBD-II
U0307
Software Incompatibility With Glow Plug Control Module 1
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Generic OBD-II
U0308
Software Incompatibility With Throttle Actuator Control Module
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Generic OBD-II
U0309
Software Incompatibility With Alternative Fuel Control Module
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Generic OBD-II
U030A
Software Incompatibility With Evaporative Emission System Leak Detection Control Module
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Generic OBD-II
U030B
Software Incompatibility With Glow Plug Control Module 2
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Generic OBD-II
U030C
Software Incompatibility With Reductant Quality Module
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Generic OBD-II
U030D
Software Incompatibility With NOx Sensor A
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Generic OBD-II
U030E
Software Incompatibility With NOx Sensor B
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Generic OBD-II
U030F
Software Incompatibility With Reductant Control Module
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Generic OBD-II
U0310
Software Incompatibility With Fuel Pump Control Module
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Generic OBD-II
U0311
Software Incompatibility With Drive Motor Control Module
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Generic OBD-II
U0312
Software Incompatibility With Battery Energy Control Module A
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Generic OBD-II
U0313
Software Incompatibility With Battery Energy Control Module B
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Generic OBD-II
U0314
Software Incompatibility With Four-Wheel Drive Clutch Control Module
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Generic OBD-II
U0315
Software Incompatibility With Anti-Lock Brake System (ABS) Control Module
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Generic OBD-II
U0316
Software Incompatibility With Vehicle Dynamics Control Module
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Generic OBD-II
U0317
Software Incompatibility With Park Brake Control Module
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Generic OBD-II
U0318
Software Incompatibility With Brake System Control Module A
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Generic OBD-II
U0319
Software Incompatibility With Steering Effort Control Module
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Generic OBD-II
U031A
Software Incompatibility With Transmission Range Control Module
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Generic OBD-II
U031B
Software Incompatibility With DC/DC Converter Control Module 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.