Faulty clutch pedal position sensor (internal open circuit or worn track); Unplugged, corroded or loose connector at the sensor; Damaged, chafed or broken wiring in the pedal area or loom, open circuit to the sensor signal, supply or earth; Sensor mounted or adjusted incorrectly after pedal box or clutch work; Poor earth or supply to the sensor circuit; Fault in the control unit that reads the sensor.

P08A7

Clutch Pedal Position Sensor A Circuit/Open.

Generic
Powertrain
Generic code
Medium severity

How this code is built

P: SystemPowertrain
0: Defined bySAE, the same on every car
8: AreaTransmission
A7: FaultThe specific fault in that area

What it means

P08A7 is the generic code for an open circuit fault in the clutch pedal position sensor 'A' circuit. The control unit monitors the sensor's signal and supply and has seen a voltage or signal that suggests the circuit is broken or disconnected. The exact sensor type, wiring layout and which module sets the code depend on the vehicle.

Symptoms

Engine will not start, or cranks only intermittently, on manual cars that need the clutch pedal signal
Stop-start system unavailable or not working
Cruise control not working or cancelling unexpectedly
Warning light on, with a possible message about the clutch or stop-start
Hesitation, surging or poor drive-off feel on some models
Erratic or unresponsive torque management when changing gear

Possible causes

Faulty clutch pedal position sensor (internal open circuit or worn track)likely
Unplugged, corroded or loose connector at the sensorlikely
Damaged, chafed or broken wiring in the pedal area or loom, open circuit to the sensor signal, supply or earthlikely
Sensor mounted or adjusted incorrectly after pedal box or clutch workpossible
Poor earth or supply to the sensor circuitpossible
Fault in the control unit that reads the sensorrare

How to diagnose

Read all stored and pending codes and note the freeze frame data, then check for related clutch, brake or stop-start codes
Inspect the sensor, its connector and the wiring behind the pedal for damage, water ingress, corrosion and security
Check the sensor is mounted and adjusted correctly and that the pedal moves through its full travel without binding
With a scan tool, watch the clutch pedal position or switch data while pressing and releasing the pedal and see whether it responds smoothly and fully
Check the sensor supply, signal and earth with a multimeter against the manufacturer's wiring diagram and specification
Wiggle-test the harness and connector while watching live data to find intermittent faults
Test the wiring for continuity and for shorts to earth or supply with the connectors unplugged
Clear the code after repair and road test to confirm it does not return

How to fix

Repair or replace damaged wiring and connectors that show an open circuit
Clean, refit and secure loose or corroded connectors
Replace the clutch pedal position sensor if its output is faulty or absent
Refit and adjust the sensor to the manufacturer's procedure if it is misplaced
Repair poor supply or earth connections to the sensor circuit
Diagnose and, if confirmed, replace or repair the control unit only after all wiring and sensor faults are ruled out

Can I keep driving?

Medium severity

The car can often be driven, but it may fail to start, lose cruise control or stop-start, or behave unpredictably if the signal drops out. Get it checked soon, because a no-start could leave you stranded.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.