What it means
The clutch pedal position sensor B reports a circuit high fault. Redundant pedal position channel is unreliable.
At a glance
- Usually lights the check-engine light
How it works
Clutch pedal position sensor B provides a second pedal-travel signal to the control module. This code sets when the B-channel circuit voltage exceeds its expected range, leaving the module unable to trust that redundant reading.
Common causes
Most likely first.
- Position sensor failed
- Wiring fault
- Connector pins corroded - high contact resistance
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
How to diagnose it
- Review freeze-frame and live data to confirm sensor B is high and see whether the reading responds to pedal movement.
- Inspect sensor B’s connector and harness for loose or corroded terminals, damaged insulation, or a signal wire shorted to voltage.
- Check the B-channel supply, ground, and signal wiring against the wiring diagram and manufacturer’s specification.
- Compare sensor A and B readings through pedal travel to verify that the high condition is confined to the B channel.
- If the wiring passes inspection, test clutch pedal position sensor B with the manufacturer’s procedure.
Common fixes
- Repair a signal wire shorted to voltage or other damaged sensor B wiring.
- Clean and secure loose or corroded connector terminals.
- Replace a faulty clutch pedal position sensor B.
- Perform any required pedal sensor calibration after repair.
Can I keep driving?
This code does not by itself indicate limp mode, but it can interfere with clutch-related transmission control. Avoid driving if gear changes or clutch operation are unreliable, and get the circuit checked soon.
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.