OBD-II code · Network
U0230 Lost Communication With Rear Gate Module
ECU lost communication with the rear gate (power tailgate) module. A communication loss with this module breaks any function relying on its data — diagnostic tools may show 'no response' and dependent modules can fall into limp mode.
Is it safe to drive with U0230?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule unpowered
- Less likelyGateway module routing CAN messages incorrectly
- Less likelyCAN terminating resistor (120 Ω) drifted out of spec
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–4 h
- Emissions test
- Usually unaffected
- Parts involved
- Rear Gate Module, Can Bus
Related codes
- 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
- U0231Lost Communication with Rain Sensor Module
- U0232Lost Communication with Left Side Obstacle Detection Control Module
- U0233Lost Communication with Right Side Obstacle Detection Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.