Code result
P052E
PCV Regulator Valve Performance
Moderate severity
What it means
The crankcase ventilation regulator valve - which throttles blow-by gas flow toward the intake based on engine load - is electrically intact but does not deliver the modelled pressure regulation. Either the valve diaphragm is fatigued or the spring is weak.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Diaphragm fatigued
highOne of the most commonly reported causes for this code — check this first.
Regulator spring weak
mediumA plausible cause — test and verify before replacing parts.
Related help
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