Crankcase (pcv) Problems of Mercedes Benz C300 - part 1

Pcv fault.

See all problems of the 2016 Mercedes Benz C300 🔎.

P052e code for pcv vent valve.

See all problems of the 2017 Mercedes Benz C300 🔎.

A couple years back I had an engine light pop up and it was the code p052e which as I’ve done my research and read a lot of forums this is a common problem with the w205 mercedes motors. As of today 04/18/24 the engine light came on and I got it diagnosed to find out it is the same problem again. This repair is almost $2000 and it is due to mercedes faulty manufacturing of the pcv valve. I have read things that say there has been extended warranty on it and a lot of submissions for recalls, that I’m not exactly sure of.

The positive crankcase ventilation (pcv) valve is crucial for regulating the flow of gases in the engine's crankcase. If the pcv valve malfunctions or becomes clogged in a car like the 2016 Mercedes Benz C300 4-matic, several problems can arise: 1. **increased pressure:** a malfunctioning pcv valve can cause pressure to build up in the crankcase. This increased pressure can lead to oil leaks, gasket failures, or even engine seals blowing out. 2. **poor engine performance:** when the pcv valve fails, it can disrupt the air-fuel mixture in the engine, leading to rough idling, stalling, or decreased fuel efficiency. This can result in a loss of power and overall poor engine performance. 3. **contamination:** a faulty pcv valve may not properly route harmful gases, like unburned fuel and moisture, out of the crankcase. This can lead to contamination of the engine oil, reducing its effectiveness in lubricating engine components and potentially causing premature wear and damage. 4. **increased emissions:** a malfunctioning pcv valve can result in increased emissions from the vehicle, as it may not properly recirculate harmful gases back into the combustion chamber for burning. Overall, a nonfunctional pcv valve can negatively impact both the car's performance and the environment, potentially leading to costly repairs and increased pollution. Additionally, prolonged exposure to increased emissions from the vehicle can be harmful to both the environment and the health of individuals. Therefore, it's essential to regularly inspect and maintain the pcv valve to ensure proper functioning of the vehicle.

Pcv valve failure po52e error.

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Check engine light came on. Error code indicates a pcv crankcase ventilation valve has malfunctioned. Code is p052e. This is a notorious problem with mercedes, BMW and other european cars. It should also be considered part of the emissions system. Contacting the mb dealers, I cannot get a clear definition whether it is covered by extended warranties or any warranty whatsoever. They are vague as to "maybe, but not sure". I feel that there should be a recall to fix the defective parts involved with this error code.

P052e pcv regulator valve performance.

My mercedes has a p052e check engine light code for its pcv value performance. I do see that many other drivers are having this issue and that repairs are around $2,000.

I keep getting the p052e pcv replacement valve issue. I see online that this has impacted multiple mercedes c class but no recalls have been issued for this.

My vehicle started shaking and the check engine light came on. It's a pcv valve.

P052e - pcv regulator valve performance: actuator stuck p06da - engine oil pressure control circuit/open no sub type information my understanding is these are common issues and mercedes and anyone who works on them know it is a common issue for all lines. I also have a broken sunroof that seems to be common on all lines. There are some recalls out for the sunroof but not for the c-class C300, although all of the videos I have found match the same issues that were recalled on other models. The dealer confirmed these are known issues.

Crankcase ventilation- code: p052e came up and I had just bought from the dealership with 87k miles.

The contact owns a 2017mercedes-benz C300. The contact stated that upon having the vehicle inspected, the check engine warning light illuminated. The vehicle was diagnosed and produced code: p052e. The vehicle was then taken to an independent mechanic where it was diagnosed that the positive crankcase ventilation (pcv) failed and needed to be replaced. The vehicle was repaired. The dealer and manufacturer were notified of the failure and confirmed that the VIN was not included in a recall. The failure mileage was approximately 53,000.

The contact owns a 2015 mercedes-benz C300. The contact stated while driving 25 mph, the check engine warning light illuminated. The contact veered to the side of the road. The vehicle was towed to an independent mechanic, where the diagnostic test code p052e was read and it was determined that the positive crankcase ventilation (pcv) valve had failed and needed to be replaced. The vehicle was not repaired. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 125,000.

The pcv valve/crankcase has broken 3 times on this car with different repairs and parts. This is happening very commonly to these cars and may cause significant safety issues. The code is p052e.

Has 27000 miles out of warranty at 5 years. Pcv code bad actuator. Looks like a common problem. Should be recalled.

See all problems of the 2018 Mercedes Benz C300 🔎.

Mercedes benz via american service center in arlington, va regarding the service they performed on my 2015 C300 w4 4door sedan awd the following issues have presented: issue: 03mbzzwarn1 engine light tech: 901844 problem: engine harness, engine control module, crankcase vent valve, and O2 sensor bank 1 cause: found oil in the engine harness and engine harness. Oil is entering threw [sic] the crank case vent valve. Recommend replacing. Approximate miles at the time of this issue: 63,141. Cost of repair: $8309. 58 yes, the vehicle is available for inspection. Safety concerns: the vehicle is not able to pass an emissions test with the engine light engaged. Per America service center in arlington, va, which is the only service center that has serviced the vehicle during my ownership, they commented and documented that oil is entering through a vent valve. My additional concerns are: if an odorless fume is passing into the passenger cabin and the vehicle can not pass state emissions these are immediate concerns. The service center advices that I may continue to drive the vehicle. However, I am concerned should the oil fully empty without warning the vehicle may fail while in use on a dangerous roadway due to cause and effect of additional unknown maintenance related operational CO-dependent mechanical components.

A very common problem with mercedes. Pcv ventilation valve. Fault code p052e.

Pcv valve causing contamination and shortening the life of the engine oil.

Obd2 scanner reported error code p052e which seems a very common issues on mercedes c class 2015 or newer and there is no recall issued by Mercedes Benz yet which points out to possible problems with "pcv regulator valve components. There are 100s of post in the forum related to same issue.

Positive crankcase ventilation (pcv) can cause problem to the engine. Check engine light is on, car have been scanned. This happen one week ago. There’s no recall for this and happen a lot many Mercedes Benz causing problems on engine and is not on warranty or any other recalls.

My 2017 mercedes C300 experienced what appears to be a very common engine fault with the w205 engine. It involves the "pcv" valve and the engine code fault is p052e. When this fault occurs the engine will stall and sputter. My wife and daughter were in my car last week and it stalled at an intersection which could have resulted in an accident, but luckily the school crossing guards were there to stop traffic and allow her to restart the car and get to the side of the road. The check engine light had previously been on and off for sometime so I had my local mavis check what the light was on for and they gave me the fault code. I did not think it was anything that serious because the car ran fine. The car was towed today to mercedes to officially diagnosis the problem.

I have a mercedes C300 2017 and recently I was driving my car and the check engine light came on all of a sudden so I took it to my local shop to diagnose it they told me it was the pcv valve, so I called mercedes and they’re telling me that this is not covered and of course my warranty is no longer covered I have about 63k miles on the car. Mercedes is saying they don’t have a recall for this but I’ve googled around and multiple people are saying the same issue happened to them around the 55-65k range. It’s super frustrating that this doesn’t flag a recall.

Engine code p052e - pcv regulator valve performance. Common faulty Mercedes Benz part integral to the car. Just took in the car to mbseattle.

My check engine light came on at about 68,800 miles. The obd code shows that I need the positive crankcase ventilation valve replaced. The repair for this is approximately $2,300 and requires about six hours of shop labor, and the part costing over $425. I’ve never known a pcv replacement on any vehicle to be more than $60, with the part itself being about $10-$20. Most times, the part can be simply cleaned and replaced. This is very disappointing. Especially given that the engine design, just two years prior, would have been less than $200 for the same repair, with part costing about $60. The vehicle does not show any symptoms of the part being blocked, as indicated in the code. There is no hesitation, loss a power or decline in fuel efficiency. However, the engine light cannot be turned off until the part is replaced. I think that $2300 to replace a part on seven year old car, well under 100,000 miles is indicative of either poor design or predatory. Hopefully, something can been done to address this. Thank you!.

Cel on, p052e code for crankcase ventilation/pcv failure. Vehicle has about 55k miles. Extremely common failure on these vehicles at this mileage and expensive/complicated to repair. Will not pass state emissions because of this. Given extensive anecdotal evidence of the pervasiveness of this problem, recall should be issue.

At approximately 65k miles, my pcv valve is bad and needs to be replaced at a cost of $1600. I saw lots of customer complaints for the same issue online, I think mercedes should cover this item under recall.

Vehicle throwing p052e error (crankcase ventilation valve - pcv) - has occurred multiple times and has effected numerous C300 models of the years 2015-18. - the car has lower acceleration performance and can be potentially dangerous when merging on highways.

Pcv valve.

Engine light was up at around 48700mile, diagnosis reading stated "pcv regulator valve performance".

Pcv valve causing check engine light to come on. 50,000 miles on vehicle.

Check engine light came on and gave code p052e pcv regulator valve performance.

Diagnosis code p052e pcv regulator valve replacement/crankcase replacement. Dealership does not want to acknowledge code while car was under warranty despite proof that it existed when check engine was diagnosed. Now code keeps coming back with check engine light on dashboard. To replace part, the engine has to be taken down since the crankcase is inside the engine. This is a malfunction during assembly/manufacturing, it is impossible to damage part while under usage. Mercedes benz should be held responsible for part replacement and labor. I urge you to investigate this matter with other clients and ask the manufacturer to replace part and pay for labor.

I got a p052e code on my car which means a faulty crankcase or pcv valve. After doing some reading it seems to be a super common problem.

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.