P2D91

Engine Oil Pressure Sensor/Switch C Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$17–56 (est.)

Symptoms

The oil pressure indicator on the dashboard is on
Unstable oil pressure readings
Loss of engine power
Unusual noises from the engine
Engine overheating

Causes

Oil pressure sensor C fault
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Low or poor quality engine oil
Problems with the engine control unit

How to Fix

Check the level and condition of the engine oil
Inspect the sensor circuit for damage
Check the contacts in the sensor connector
Replace oil pressure sensor if necessary
Test the operation of the system after repair

Related codes

P2D90 P2D92 P0520