U0232
Lost Communication with Left Side Obstacle Detection Control Module
The driver assistance system has lost the left-side obstacle detection / blind spot monitor controller. The blind-spot warning light and lane-change warning are deactivated.
- Check engine light: Not always
- Emissions related: No
- Repair difficulty: medium
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
Common causes
Ordered by how often each turns out to be the cause.
- Blind spot module unpoweredCommon
- Bumper damage broke wiringPossible
- Gateway module routing CAN messages incorrectlyLess likely
Parts involved
- Blind Spot Module Left
- CAN Bus Wiring
U0232 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.