P25FESupercharger Disconnect Clutch
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- P25FE is the umbrella code for the supercharger disconnect clutch: it says the clutch function has failed without naming whether it is stuck, slipping or electrically faulty. Those cases have their own codes – P25E9 and P25EA for the mechanical states, P25EB to P25ED for the control circuit – so a control unit that sets P25FE either does not distinguish them or uses it as a summary. The clutch lets the engine computer switch the belt-driven blower on for low-speed torque and off at idle, cruise or high revs to save friction losses, as Eaton describes for its clutched TVS supercharger. No carmaker documents P25FE publicly; CARB requires such supercharger components to be monitored. Expect weaker low-speed response and higher consumption.
- What you may notice
- Check engine lamp on
- Weak response at low engine speed
- Higher fuel consumption
- Likely causes
- LikelyWorn or seized clutch on the supercharger pulley
- PossibleFault in the coil, wiring or connector of the clutch
- RareEngine control software that misjudges the clutch state
- 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 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.