OBD-II code · Powertrain (generic)
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.
Is it safe to drive with P052E?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyDiaphragm fatigued
- PossibleRegulator spring weak
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.4–1.4 h
- Emissions test
- Likely to fail
- Parts involved
- Pcv Regulator Valve
Related codes
- P052BCold Start A Camshaft Position Timing Over-Retarded Bank 1
- P052CCold Start A Camshaft Position Timing Over-Advanced Bank 2
- P052DCold Start A Camshaft Position Timing Over-Retarded Bank 2
- P052FGlow Plug Control Module 1 System Voltage
- P0530A/C Refrigerant Pressure Sensor "A" Circuit
- P0531A/C Refrigerant Pressure Sensor Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.