OBD-II code · Network
U0233 Lost Communication with Right Side Obstacle Detection Control Module
The driver assistance system has lost the right-side obstacle detection / blind spot monitor controller. The right blind-spot warning is deactivated.
Is it safe to drive with U0233?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyRight blind spot module 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
- Best left to a mechanic
- Typical labour
- 0.5–2.5 h
- Emissions test
- Usually unaffected
- Parts involved
- Blind Spot Module Right, Can Bus Wiring
Related codes
- U0230Lost Communication With Rear Gate Module
- U0231Lost Communication with Rain Sensor Module
- U0232Lost Communication with Left Side Obstacle Detection Control Module
- U0234Lost Communication With Convenience Recall Module
- U0235Lost Communication with Cruise Control Front Distance Range Sensor
- U0236Lost Communication with Steering Angle Sensor Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.