P250B

What it means

The oil level sensor is electrically intact, but the level reading is implausible — for example a constant value across drives, jumps that cannot match real oil consumption, or readings outside the design range. Often a contaminated or aged float/ultrasonic sender.

Is it safe to drive?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.

Most likely causes

• Aged or contaminated sender

  high

  One of the most commonly reported causes for this code — check this first.

• Foaming oil under high RPM masking the level

  medium

  A plausible cause — test and verify before replacing parts.

• Sensor element aged beyond calibration window

  low

  Less common, but worth ruling out after the more likely causes.

Related help

• Full P250B diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?