Code result
P250D
Engine Oil Level Sensor Circuit High
Moderate severity
What it means
The oil level sensor signal voltage reads above the upper limit, typically a short to reference voltage or an open signal return. Pegged at maximum, the ECM cannot distinguish full from invalid and disables the level monitor.
Is it safe to drive?
Use caution
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
Signal wire shorted to reference voltage
highOne of the most commonly reported causes for this code — check this first.
Open signal return
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P250D freeNo credit card required