P0521high severityPowertrain
Engine Oil Pressure Sensor/Switch Range/Performance
on 2016 Ford Focus Electric Motor · FWD
What this code means
Oil pressure sensor reading is out of expected range.
Symptoms
- Oil pressure gauge erratic
- Warning light flickering
Common causes
- Sensor fault
- Oil pressure fluctuating
- Worn oil pump
- Wrong viscosity oil
Diagnostic steps
- Test with mechanical gauge
- Check oil level and condition
- Test sensor
- Verify correct oil viscosity
Repair notes
Verify actual pressure. Replace sensor if pressure is good.
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