Code result
P051F
PCV Filter Restriction
Moderate severity
What it means
The pressure or flow sensor in the PCV path detects increased restriction across the oil-mist filter element. Once saturated with oil mist, the filter no longer passes blow-by gas, raising crankcase pressure and pushing oil past seals.
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
PCV filter saturated with oil mist
highOne of the most commonly reported causes for this code — check this first.
Related help
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