OBD-II reference

All 9.533 generic OBD-II codes, explained in detail.

Causes, inspection steps and sources — a comprehensive DIY archive. Created and maintained with love for the detail. Good luck and have fun!

Powertrain generic / SAE

P2B57

Low Engine Oil Pressure - Camshaft Control Disabled

Engine oil pressure has fallen below the threshold required for hydraulic camshaft phasing. The ECM disables variable cam control to protect the actuator and lifters.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberB / 57

Possible causes

  • Engine oil level low high
  • Oil pump worn or pressure relief stuck open medium

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 50–1500 €
  • Estimated time: 0.5–6 h
  • Component: engine oil pressure sensor
  • Component: engine oil pump
  • Component: vvt actuator
  • MIL / check engine light
  • limp mode possible

Sources

References

How to read OBD-II codes

The first letter names the vehicle system, the second digit distinguishes generic from manufacturer-specific, the remaining digits group fault area and number.

PPowertrain: engine, transmission, emissions
BBody: chassis trim, comfort, interior
CChassis: suspension, brakes, steering
UNetwork: CAN, control modules, communication