U02xx codes — Network communication

174 generic network trouble codes from U0200 to U02C1. Each links to its page: what it means, how serious it is, and how to fix it.

• U0200Lost Communication With Door Control Module B
• U0201Lost Communication With Door Control Module C
• U0202Lost Communication With Door Control Module D
• U0203Lost Communication With Door Control Module E
• U0204Lost Communication With Door Control Module F
• U0205Lost Communication With Door Control Module G
• U0206Lost Communication With Folding Top Control Module
• U0207Lost Communication With Moveable Roof Control Module A
• U0208Lost Communication With Seat Control Module A
• U0209Lost Communication With Seat Control Module B
• U020ALost Communication With Moveable Roof Control Module “B”
• U020BLost Communication With Door Control Module H
• U020CLost Communication With Wireless Accessory Charging Module A
• U020DLost Communication With Wireless Accessory Charging Module B
• U0210Lost Communication With Seat Control Module C
• U0211Lost Communication With Seat Control Module D
• U0212Lost Communication With Steering Column Control Module
• U0213Lost Communication With Mirror Control Module A
• U0214Lost Communication With Remote Function Actuation Module
• U0215Lost Communication With Door Switch A
• U0216Lost Communication With Door Switch B
• U0217Lost Communication With Door Switch C
• U0218Lost Communication With Door Switch D
• U0219Lost Communication With Door Switch E
• U0220Lost Communication With Door Switch F
• U0221Lost Communication With Door Switch G
• U0222Lost Communication With Door Window Motor A
• U0223Lost Communication With Door Window Motor B
• U0224Lost Communication With Door Window Motor C
• U0225Lost Communication With Door Window Motor D
• U0226Lost Communication With Door Window Motor E
• U0227Lost Communication With Door Window Motor F
• U0228Lost Communication With Door Window Motor G
• U0229Lost Communication With Heated Steering Wheel Module
• U022ELost Communication With Object Detection Maintenance Control Module A
• U022FLost Communication With Object Detection Maintenance Control Module B
• U0230Lost Communication With Rear Gate Module
• U0231Lost Communication With Rain Sensing Module
• U0232Lost Communication With Side Obstacle Detection Control Module A
• U0233Lost Communication With Side Obstacle Detection Control Module B
• U0234Lost Communication With Convenience Recall Module
• U0235Lost Communication With Front Distance Range Sensor - Single Sensor or Center
• U0236Lost Communication With Column Lock Module
• U0237Lost Communication With Digital Audio Control Module C
• U0238Lost Communication With Digital Audio Control Module D
• U0239Lost Communication With Entrapment Control Module A
• U023ALost Communication With Image Processing Module A
• U023BLost Communication With Image Processing Module B
• U023CLost Communication With Image Processing Module C
• U023DLost Communication With Front Distance Range Sensor - Left
• U023ELost Communication With Front Distance Range Sensor - Right
• U0240Lost Communication With Entrapment Control Module B
• U0241Lost Communication With Headlamp Control Module A
• U0242Lost Communication With Headlamp Control Module B
• U0243Lost Communication With Parking Assist Control Module B
• U0244Lost Communication With Running Board Control Module
• U0245Lost Communication With Entertainment Control Module - Front
• U0246Lost Communication With Seat Control Module E
• U0247Lost Communication With Seat Control Module F
• U0248Lost Communication With Remote Accessory Module
• U0249Lost Communication With Entertainment Control Module - Rear B
• U024ALost Communication With Interior Lighting Control Module A
• U024BLost Communication With Seat Control Module G
• U024CLost Communication With Seat Control Module H
• U024DLost Communication With Seat Control Module J
• U024ELost Communication With Side Obstacle Detection Control Module C
• U024FLost Communication With Side Obstacle Detection Control Module D
• U0250Lost Communication With Impact Clasification System Module
• U0251Lost Communication With Running Board Control Module B
• U0252Lost Communication With Lighting Control Module - Rear B
• U0253Lost Communication With Accessory Protocol Interface Module
• U0254Internal malfunction detected in Remote start control module
• U0255Lost Communication With Front Controls Interface Module
• U0256Lost Communication With Front Display Interface Module
• U0257Lost Communication With Front Controls/Display Interface Module
• U0258Lost Communication With Radio Transceiver
• U0259Lost Communication With Special Purpose Vehicle Control Module A
• U025ALost Communication With Special Purpose Vehicle Control Module B
• U025BLost Communication With Special Purpose Vehicle Control Module C
• U025CLost Communication With Special Purpose Vehicle Control Module D
• U025DLost Communication With Front Controls Interface Module B
• U025ELost Communication With Electronic Brake Booster Control Module A
• U025FLost Communication With Electronic Brake Booster Control Module B
• U0260Lost Communication With Seat Control Switch Module A
• U0261Lost Communication With Seat Control Switch Module B
• U0262Lost Communication With Audio Amplifier B
• U0263Lost Communication With Speech Recognition Module
• U0264Lost Communication With Camera Module - Rear
• U0265Lost Communication With Image Processing Sensor A
• U0266Lost Communication with Image Processing Sensor B
• U0267Lost Communication With Image Processing Sensor C
• U0268Lost Communication With Image Processing Sensor D
• U0269Lost Communication With Image Processing Sensor E
• U026ALost Communication With Image Processing Sensor F
• U026BLost Communication With Image Processing Sensor G
• U026CLost Communication With Image Processing Sensor H
• U026DLost Communication With Image Processing Sensor I
• U026ELost Communication With Image Processing Sensor J
• U026FLost Communication With Image Processing Sensor K
• U0270Lost Communication With Image Processing Sensor L
• U0271Lost Communication With Seat Control Switch Module C
• U0272Lost Communication With Seat Control Switch Module D
• U0273Lost Communication With Lighting Driver Control Module “A”
• U0274Lost Communication With Lighting Driver Control Module “B”
• U0275Lost Communication With Lighting Driver Control Module “C”
• U0276Lost Communication With Lighting Driver Control Module “D”
• U0277Lost Communication With Seat Control Module K
• U0278Lost Communication With Seat Control Module L
• U0279Lost Communication with Haptic Control Module
• U027ALost Communication With Battery Charger Control Module C
• U027BLost Communication with Battery Charger Control Module D
• U027CLost Communication With Off-Board Charger Control Module
• U0284Lost Communication With Active Grille Air Shutter Module A
• U0285Lost communication with Active Grille Air shutter control module 'B'
• U0286Lost Communication With Radiator Anti-Tamper Device
• U0287Lost Communication With Transmission Fluid Pump Module
• U0288Lost Communication With DC To AC Converter Control Module A
• U0289Lost Communication With DC To AC Converter Control Module B
• U028ALost Communication With Transmission Fluid Pump Module B
• U028BLost Communication With Active Grille Air Shutter Module C
• U028CLost Communication With Active Grille Air Shutter Module D
• U028DLost Communication with Active Aerodynamic Feature Control Module A
• U028ELost Communication with Active Aerodynamic Feature Control Module B
• U028FLost Communication with Active Aerodynamic Feature Control Module C
• U0290Lost Communication with Active Aerodynamic Feature Control Module D
• U0291Lost Communication With Gear Shift Module B
• U0292Lost Communication With Drive Motor Control Module B
• U0293Lost Communication With Hybrid PCM
• U0294Lost communication with Powertrain Control Monitor Module
• U0295Lost Communication With AC To AC Converter Control Module
• U0296Lost Communication With AC to DC Converter Control Module A
• U0297Lost Communication With AC to DC Converter Control Module B
• U0298Lost Communication With DC to DC Converter Control Module A
• U0299Lost Communication With DC to DC Converter Control Module B
• U029ALost Communication With Hybrid/EV Battery Pack Sensor Module
• U029BLost Communication With Drive Motor Control Module C
• U029CLost Communication With Drive Motor Control Module D
• U029DLost Communication With NOX Sensor 'A'
• U029ELost Communication With NOX Sensor 'B'
• U029FLost Communication With Evaporative Emission System Leak Detection Control Module
• U02A0Invalid Data Received From Hybrid/EV Battery Interface Control Module D
• U02A1Lost Communication With NOx Sensor C
• U02A2Lost Communication With Reductant Quality Module
• U02A3Lost Communication With Particulate Matter Sensor Module
• U02A4Lost Communication With NH3 Sensor
• U02A5Lost Communication With Reductant Heater Control Module
• U02A6Lost Communication With Safety Integration Control Module
• U02A7Lost Communication With Engine Sound Control 1
• U02A8Lost Communication With Engine Sound Control 2
• U02A9Lost Communication With Charge Air Cooler Coolant Pump A
• U02AALost Communication With Engine Disconnect Clutch
• U02ABLost Communication With Vehicle Thermal Management Control Module
• U02ACLost Communication With Turbocharger/Supercharger Boost Control A
• U02ADLost Communication With Turbocharger/Supercharger Boost Control B
• U02AELost Communications With Hybrid/EV Battery Coolant Pump
• U02AFLost Communication With Turbocharger Turbine Inlet Valve Position Sensor
• U02B0Lost Communication With Turbocharger/Supercharger Boost Control B Position Sensor
• U02B1Lost Communication With Comfort and Convenience Display A
• U02B2Lost Communication With Comfort and Convenience Display B
• U02B3Lost Communication With Driver Monitoring System Module
• U02B4Lost Communication With Front Radar Module A
• U02B5Lost Communication With Front Radar Module B
• U02B6Lost Communication With Rear Radar Module A
• U02B7Lost Communication With Rear Radar Module B
• U02B8Lost Communication With Rear Radar Module C
• U02B9Lost Communication With Rear Radar Module D
• U02BALost Communication With Hybrid/EV Electronics Coolant Pump B
• U02BBLost Communications with EVAP System Purge Pump
• U02BCLost Communication With Localization and Mapping Module
• U02BDLost Communication With Night Vision Control Module
• U02BELost Communication With Trailer Backup Assist Control Module
• U02BFLost Communication With Interior Lighting Control Module B
• U02C0Lost Communication With Active Radiator Air Flow Control Module A
• U02C1Lost Communication With Hybrid/EV Electronics Coolant Pump C

All code ranges