P0521

Engine Oil Pressure Sensor/Switch A Range/Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Oil pressure warning light is on
Unstable engine operation
Power drop

Causes

Faulty oil pressure sensor
Open or short circuit in wiring harness
Low oil level
Contaminated oil
Oil pump problems

How to Fix

Check the oil level and condition
Visually inspect the sensor wiring harness
Test the oil pressure sensor
Replace sensor if necessary
Check the operation of the oil pump

Related codes

P0522 P0523 P0520