P052E
PCV Regulator Valve Performance
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.
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.
Common causes
- high
Diaphragm fatigued
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-280
- medium
Regulator spring weak
A plausible cause — test and verify before replacing parts.
Typical part cost: $70-280
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P052E mean?
P052E means "PCV Regulator Valve Performance". It is a generic OBD-II code that points to a fault in the vehicle speed, idle control, auxiliary inputs.
What are the most common causes of P052E?
diaphragm fatigued; regulator spring weak — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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