What it means
The clutch pedal position sensor A reports a circuit low fault. Pedal position cannot be measured reliably.
At a glance
- Usually lights the check-engine light
How it works
Clutch pedal position sensor A sends a signal representing pedal travel to the control module. This code sets when the sensor A signal is lower than the module’s calibrated range, which can result from a sensor fault, wiring problem, or high resistance at corroded connector pins.
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
- Record freeze-frame data and check live sensor A data with the clutch pedal released and pressed to confirm the signal remains abnormally low.
- Inspect sensor A’s connector and wiring for corrosion, moisture, loose terminals, chafing, or damage that could pull down the signal.
- Check the sensor circuit’s supply, ground, and signal path for shorts to ground or excessive resistance, following the vehicle wiring diagram.
- Measure voltage at the sensor and at the control-module end of the circuit under the manufacturer’s test conditions to locate any wiring voltage drop.
- If the circuit and connector are sound, test sensor A’s output through pedal travel against the manufacturer’s specification.
Common fixes
- Clean or replace corroded sensor A connector terminals and ensure a secure connection.
- Repair wiring shorted to ground or showing excessive resistance.
- Replace clutch pedal position sensor A if its output remains too low with a sound circuit.
- Clear the code and verify the signal rises and changes correctly as the pedal moves.
Can I keep driving?
A low sensor A signal can interfere with clutch-related control or gear changes, so avoid driving if shifts are unreliable. Stop if the vehicle cannot select gears safely; repeated shifting problems can leave you stranded or strain the transmission.
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.