P051E

Crankcase Pressure Sensor A Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–56 (est.)

Symptoms

Check Engine Light Is On
Unstable engine operation
Increased oil consumption
Increased emissions

Causes

Open or short circuit in wiring harness
Poor contact in the sensor connector
Crankcase pressure sensor malfunction
Problems with the crankcase ventilation (PCV) system

How to Fix

Check wiring harness and connectors for damage
Clean the contacts of the sensor connector
Check the resistance of the crankcase pressure sensor
Replace sensor if necessary
Check the crankcase ventilation (PCV) system

Related codes

P051F P0520 P0521