P25E1"A" 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
- P25E1 is set when the intake phaser on bank 2 fails to re-engage its lock. The controller commands the phaser toward the locking angle, usually when shutting down or before an idle stop, and then checks whether the measured cam angle settles there; on bank 2 it does not. No manufacturer has published a description of P25E1. Mid-position locks like BorgWarner's, used on Hyundai's Gamma II, rely on oil-driven cam torque to swing the rotor into the slot, so low oil pressure at hot idle, varnish in the phaser or a control valve unable to reach the lock band are the likely culprits. Without the pin the following start is less stable and a brief rattle may be heard. CARB's VVT rules treat a pin that does not move into place as a mechanical fault to be detected. Bank 1 has its own code, P25DE.
- What you may notice
- Check engine lamp on
- Brief rattle from the timing drive on start-up
- Unsteady running right after a cold or warm start
- Likely causes
- LikelyLow oil pressure at hot idle from worn pump, bearings or thin oil
- PossibleVarnish or debris in the bank 2 intake phaser
- PossibleControl valve unable to move the spool into its lock range
- 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 – €1,600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.