What it means
This code identifies a fault associated with the steering wheel position sensor. The specific failure depends on the diagnostic subtype.
How it works
The steering wheel position sensor reports steering position to the brake control module so it can compare the driver's intended direction with the vehicle's motion. C0051 identifies a general fault associated with that sensor, but the code's diagnostic subtype is needed to tell whether the issue is electrical, calibration-related, or another sensor fault.
Common causes
Most likely first.
- Faulty steering wheel position sensor
- Sensor not calibrated after steering or alignment work
- Damaged wiring or connector
Symptoms
- ABS or stability-control warning light
- Stability control may be limited or disabled
How to diagnose it
- Read the ABS or stability-control module's freeze-frame and subtype details, then compare live steering-position data with the actual wheel position while turning the wheel slowly.
- Check whether recent steering, alignment, or battery work may have left the steering position sensor uncalibrated.
- Inspect the sensor connector and accessible wiring for looseness, corrosion, pin damage, or chafing.
- Use the module's scan data to check whether steering position changes smoothly and returns plausibly toward center.
- Follow the manufacturer's test for the sensor circuit and perform calibration only if the subtype and service information call for it.
Common fixes
- Reconnect a loose steering position sensor connector.
- Repair damaged wiring or connector terminals in the sensor circuit.
- Perform the specified steering position sensor calibration after relevant steering or alignment work.
- Replace the steering wheel position sensor if tests identify it as faulty.
Can I keep driving?
Normal braking and steering may remain, but stability control or related assistance can be limited. Drive smoothly, avoid relying on stability control in poor conditions, and have the fault checked before using the vehicle in situations where that assistance matters.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.