P25E3"B" Camshaft Position - Stuck In Locked Position (Bank 1)
- 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
- P25E3 concerns the exhaust side: the bank 1 exhaust phaser, camshaft B, remains held by its lock pin when the controller wants to move it. Exhaust timing then stays at its parking angle, which limits how the module can use valve overlap for internal exhaust gas recirculation and scavenging. The Boss 302S OBD-II list Ford published in 2014 marks P25E3 with the warning lamp, alongside the bank 2 exhaust code P25E6. BorgWarner's Gamma II system shows that exhaust phasers can use the same torsional-assist hardware as the intake side, although there only the intake phaser carries the mid-position lock. A pin that stays engaged mostly indicates low or contaminated oil at the phaser, a sticking control valve or a damaged rotor. CARB requires VVT target errors to be detected. The engine may idle roughly, emit more NOx and lose some power.
- What you may notice
- Check engine lamp on
- Rough idle
- Slight loss of power, possibly failed emissions test
- Likely causes
- LikelyLow or contaminated oil at the exhaust phaser
- PossibleBank 1 exhaust oil control valve sticking
- RareDamaged rotor or lock pin inside the exhaust phaser
- 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: €80 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.