P25E7"B" Camshaft Position - Unable to Achieve Locked Position (Bank 2)
- 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
- With P25E7 the module reports that the bank 2 exhaust phaser could not be brought into its locking position: when the lock is requested, the cam angle does not settle at the parking value or the pin does not hold it there. A start without the pin engaged tends to be rough, and on stop-start engines a smooth restart becomes less certain. No manufacturer documents P25E7 publicly; the closest documented case is P25E4 on bank 1 of Stellantis' Hurricane six, which was resolved by PCM software. Mechanically, mid-lock designs such as BorgWarner's need the rotor to swing past the slot on oil-driven cam torque, so degraded oil, a stuck spool valve or wear in the pin and its bore are usual causes. CARB treats a pin that does not move into position as a VVT fault the OBD system must detect.
- What you may notice
- Check engine lamp on
- Rough or rattling start
- Hesitant restart after an automatic engine stop
- Likely causes
- LikelyAged or sludged oil slowing the bank 2 exhaust phaser
- PossibleSpool of the bank 2 exhaust control valve hanging
- PossibleWorn lock pin or pin bore so the pin no longer holds
- RareCalibration issue fixed by a control unit update
- 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: €0 – €1,600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.