P051A

Crankcase Pressure Sensor A Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Increased oil consumption
Engine oil leaks
Unstable engine operation

Causes

Crankcase pressure sensor malfunction
Open or short circuit in wiring harness
Poor contact in the sensor connector
Mechanical problems in the crankcase ventilation system

How to Fix

Check the integrity of the sensor wiring harness
Check the contacts in the sensor connector
Check the resistance of the crankcase pressure sensor
Check the crankcase ventilation system for blockages
Replace crankcase pressure sensor if necessary

Related codes

P051B P0520 P0521