C0450: Rear Wheel Steering Position Sensor Circuit
Standardized SAE J2012 code · C04xx codes
Safety-critical system. Faults in airbags, brakes, steering or high-voltage components can put people at risk. Follow the manufacturer's service information and safety procedures, or have the vehicle checked by a qualified workshop.
What does C0450 mean?
On vehicles with active rear wheel steering, the rear position sensor reports an electrical fault. The system disables rear steering.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Common causes
- High Sensor failed
- Medium Actuator harness chafe
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of C0450 on the same make and model first.
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