Powertrain, generic (extended)

P250D Engine Oil Level Sensor Circuit High

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P250D is stored when the oil level sensor line rises above its valid range. The usual explanation is contact with a positive conductor; with pull-up inputs an interrupted line or missing sensor ground can also drive the signal high. Deutz gives the clearest definition: its EMR controller files P250D-00 as the level sensor shorted to battery. Ford lists P250D in the 2014 BOSS 302S engine code table. No passenger-car maker has published thresholds or a service bulletin for this code. A reading stuck high can mimic a full sump, so a real oil loss might go unreported until P250F logic or the oil pressure switch reacts. The low counterpart is P250C, the erratic one P250E, the generic circuit code P250A.

Likely causes

Signal wire shorted to supply voltage
Sensor ground open or signal line interrupted
Sensor electronics faulty

Symptoms

  • Oil level warning or message
  • Level display permanently at maximum

Repair estimate

DifficultyMediumDIY possible
Parts and labour€20–400
Time0.3–2 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

oil level sensorsensor wiring

Related codes

P250AP250CP250E

References: serdia.deutz.com, performanceparts.ford.com, hella.com.