P053B

PCV Heater A Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Increased crankcase pressure
Unstable engine operation at idle
Loss of engine power

Causes

PCV heater malfunction
Open or short circuit in wiring harness
Poor contact in connectors
ECU malfunction

How to Fix

Check the integrity of the wiring harness and connectors
Check PCV heater resistance
Check voltage in heater control circuit
Replace PCV heater if necessary
Check and, if necessary, replace the computer

Related codes

P053A P053C P053D