U0235
Lost Communication with Cruise Control Front Distance Range Sensor
Adaptive cruise control has lost the front radar / distance sensor. ACC is deactivated, fixed-speed cruise may stay available, and forward collision warning is disabled.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: hard
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.
- Radar obstructed or misalignedCommon
- Radar unpoweredPossible
- Gateway module routing CAN messages incorrectlyLess likely
Parts involved
- Acc Radar
- CAN Bus Wiring
U0235 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.