P2C4AClutch Actuator Position Sensor Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- The clutch actuator position sensor reports how far the release mechanism of an automated or partly automated clutch has travelled, taken at the slave cylinder or inside the actuator rather than at the pedal. Typical designs are Hall sensors reading a magnet on the clutch piston. P2C4A is the general circuit fault of this sensor. Ford reports it in two ways: its 2024 OBD summary uses P2C4A as the base code behind the low and high faults P2C4C/P2C4D (failure types 11 and 12), and lists P2C4A_48 under P166F as an internal module check of the clutch actuation position, without MIL on manual gearboxes with stop in gear. Range, low, high and erratic faults have separate codes P2C4B–P2C4E. Without a valid signal the controller cannot judge clutch state, so start-stop or automated clutch functions are switched off.
- What you may notice
- Stop-start or stop-in-gear disabled
- Warning lamp or message
- Automated clutch may refuse to engage or drive off
- Likely causes
- LikelyDamaged or corroded sensor connector near the gearbox
- PossibleOpen supply, signal or ground wire
- PossiblePosition sensor on slave cylinder or actuator failed
- RareControl module fault (Ford internal check P166F)
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Hard · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.