P1684
Metering Oil Pump Position Sensor Circuit Malfunction
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–56 (est.)
Symptoms
- Check Engine light comes on
- Unstable engine operation
- Increased noise from the oil pump
- Reduced oil pressure
- Loss of engine power
Causes
- Open or short circuit in the sensor circuit
- Oil pump position sensor malfunction
- Poor contact in sensor connectors
- Mechanical oil pump problems
- Engine control unit malfunction
How to Fix
- Check the integrity of the sensor circuit
- Check sensor connections and connectors
- Replace oil pump position sensor if necessary
- Check the condition of the oil pump
- Update engine control unit software