P051D

Crankcase Pressure Sensor A Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Increased oil consumption
Unstable engine operation at idle

Causes

Crankcase pressure sensor malfunction
Open or short circuit in wiring harness
Increased crankcase pressure due to engine wear
Dirty or clogged crankcase ventilation system

How to Fix

Check the integrity of the wiring harness and sensor connections
Check the crankcase pressure sensor readings using a diagnostic scanner
Replace crankcase pressure sensor if necessary
Check the crankcase ventilation system for blockages
If the pressure in the crankcase is high, perform engine diagnostics

Related codes

P051E P0522 P0523