P052E
Positive Crankcase Ventilation Regulator Valve Performance
DTC P052E, sometimes indicated as P052E00 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the engine idling stability causing positive crankcase ventilation regulator valve performance.
The positive crankcase ventilation (PCV) regulator valve is responsible for maintaining the correct pressure in the crankcase of the engine. If this valve does not function correctly, it can cause a variety of problems, including excessive oil consumption, poor engine performance, and even engine failure.
There are a few things that can cause the PCV regulator valve to malfunction. One common problem is a dirty or clogged valve. This can be caused by a build-up of oil and sludge in the valve, or by dirt and debris getting into the valve from the engine's air intake.
Another common problem is a defective valve. This can be caused by a faulty valve seal, or by a problem with the valve actuator.
If you are experiencing any of the problems described above, it is likely that the PCV regulator valve needs to be replaced.
- P052E: Positive Crankcase Ventilation Regulator Valve Performance
- P052E: Positive crankcase ventilation (PCV) regulator valve – performance malfunction
- P052E 00: Positive crankcase ventilation (PCV) regulator valve - performance malfunction
Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.
- A1721162060033_3 - ENGINE (PWS)
AUDI: This bulletin contains repair instrructions for when there are noises in the engine compartment with dtc P052E00. - A1720102060033_2 - ENGINE (PWS)
AUDI: This bulletin contains repair instrructions for when there are noises in the engine compartment with dtc P052E00. - A1720082060259_1 - ENGINE (PWS)
AUDI: This bulletin contains repair instructions for when dtc P052E00 is stored with noise coming from the engine compartment. - A1720072060033_1 - EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
AUDI: This bulletin contains repair instructions for when there are noises in the engine compartment with dtc P052E00.
2017 MERCEDES-BENZ GLC300 with 46000 miles
While driving, the malfunction indicator lamp (mil/check engine light) came on. After some digging this was caused by an obd ii code of P052E, which indicates a blocked crankcase vent valve actuator. This appears to be a manufacturing defect in these vehicles.
FUEL/PROPULSION SYSTEM,
2016 MERCEDES-BENZ C300 with 57000.0 miles
My 2016 C300 4matic, which has been serviced exceptionally well, turned 57,000 miles (7k miles outside of warranty), had the check engine light turn on. I went to my mechanic, who has a state of the art diagnostic unit, and it was diagnosed as code P052E which means that the crankcase ventilation regulator valve including the fuel rail needs to be replaced. Mercedes has known about this being a major problem as they modified one of the parts. My dealership quoted me over $ 2100.00 to fix it and deemed it not covered by the extended warranty. I have gone online to several mercedes benz forums and hundreds of people have had the same thing happen with this part failing around 52k mark. Since mercedes knew about this - issued an improved part to replace the defective one - nhtsa should mandate a recall. This is not some simple dyi matter. It is a complicated repair consuming many hours. It is wrong that driving this, with this code, could literally kill you. I implore nhtsa to mandate a recall based on the facts specified herein. By the way i have a 1999 ml320 that i have meticulously maintained and drives perfect and i have owned many other mercedes benz. I am 58 years old and i have never filed a complaint with nhtsa before. This is a very serious matter. Please help
ENGINE, ENGINE