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

P250E

Engine Oil Level Sensor Circuit Intermittent/Erratic

The oil level signal jumps or drops out intermittently — usually loose contacts, vibration cracks at the sender or oil sloshing on bumpy roads. The ECM filters short transients but flags the input when the noise pattern exceeds the diagnostic limits.

SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 0E

Possible causes

  • Loose or oil-soaked connector high
  • Cracked sender housing medium
  • Connector with intermittent contact under vibration low

Inspection / repair

  • Difficulty: medium
  • DIY: possible
  • Estimated cost: 80–400 €
  • Estimated time: 0.5–2 h
  • Component: oil level sensor
  • Component: sensor wiring

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