P055A

Engine Oil Pressure Sensor/Switch B Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–111 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Unstable operation at idle
Emergency engine operation

Causes

Oil pressure sensor B malfunction
Open or short circuit in wiring harness
Poor contact in the sensor connector
Low oil level
Oil pump malfunction

How to Fix

Check the oil level and condition
Visually inspect the wiring harness and sensor connectors
Check the resistance of the oil pressure sensor
Check the voltage in the sensor circuit
If necessary, replace the sensor or repair the wiring harness

Related codes

P0520 P0521 P0522 P0523