OBD-II code · Network
U0234 Lost Communication With Convenience Recall Module
ECU lost communication with the convenience recall module (recalls user-specific seat/mirror/wheel positions).
Is it safe to drive with U0234?
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
- 0.5–3 h
- Emissions test
- Usually unaffected
- Parts involved
- Convenience Module, Can Bus
Related codes
- U0231Lost Communication with Rain Sensor Module
- U0232Lost Communication with Left Side Obstacle Detection Control Module
- U0233Lost Communication with Right Side Obstacle Detection Control Module
- U0235Lost Communication with Cruise Control Front Distance Range Sensor
- U0236Lost Communication with Steering Angle Sensor Module
- U0237Lost Communication with Sunroof Assembly Control Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.