P2B57Low Engine Oil Pressure - Camshaft Control Disabled
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- P2B57 is a status code rather than a circuit fault: the engine control has measured or calculated oil pressure too low for safe camshaft adjustment and has therefore switched the cam control off. Hydraulic cam phasers and oil-operated lift switching need a minimum pressure to hold position; below it the parts would rattle or drift. No manufacturer documents the code publicly; NTN-SNR lists it as camshaft timing deactivated because of low oil pressure, and CARB (e)(13) asks for monitoring of valve timing systems. Low oil level, wrong viscosity, a clogged pickup or a weak oil pump are the usual reasons, and a faulty pressure sensor can mimic them. Check pressure first: P0520–P0524 and P06DD/P06DE point to the sensor or pump control.
- What you may notice
- Check engine light on, often together with an oil pressure warning
- Camshaft adjustment inactive, weaker low-end torque and rough idle
- Rattle from the cam phasers at start or when hot
- Likely causes
- LikelyOil level too low or oil of the wrong viscosity
- PossibleWorn oil pump, faulty pump control or clogged pickup screen
- PossibleOil pressure sensor reading too low although pressure is fine
- RareWorn bearings causing internal oil leakage at high temperature
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Often possible to do yourself.Typical cost: €50 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.