Network & communication
Definition only
U0233: Lost Communication with Right Side Obstacle Detection Control Module
Standardized SAE J2012 code · U02xx — Lost communication with modules
What does U0233 mean?
The driver assistance system has lost the right-side obstacle detection / blind spot monitor controller. The right blind-spot warning is deactivated.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
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
- High Right blind spot module unpowered
- Low Gateway module routing CAN messages incorrectly
- Low CAN terminating resistor (120 Ω) drifted out of spec
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of U0233 on the same make and model first.
U0233 in the community
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