OBD Codes List

Diagnostic reference · P250A

P250A

Engine Oil Level Sensor Circuit

System
Speed and idle control (P code)
Lamp
Check Engine Light
Category
Powertrain - Computer and Auxiliary Controls

What it means

P250A means Engine Oil Level Sensor Circuit.

Where it lives

For P250A, the circuit described runs through the sensor. The description of P250A reports a fault at the sensor.

Check these first

  • Open or shorted oil level sensor wiring
  • Failed oil level sensor
  • Oil level running low enough to trip the sensor
  • Corroded oil level sensor connector

What to do next

  1. Check engine oil level on the dipstick
  2. Inspect the oil level sensor wiring and connector
  3. Measure resistance across the oil level sensor
  4. Verify reference voltage and ground at the sensor
  5. Replace the oil level sensor if the circuit tests bad
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.