P052E
141 owner reports and 0 manufacturer filings across 19 model years from Infiniti, Mercedes-Benz.
Where P052E shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2016 Mercedes-Benz C-Class | Engine | — | 44 | |
| 2017 Mercedes-Benz C-Class | Engine | — | 23 | |
| 2018 Mercedes-Benz C-Class | Engine | — | 20 | |
| 2018 Mercedes-Benz GLC-Class | Engine | — | 9 | |
| 2017 Mercedes-Benz GLC-Class | Engine | — | 9 | |
| 2016 Mercedes-Benz Metris | Engine | — | 7 | |
| 2016 Mercedes-Benz GLC-Class | Fuel/Propulsion System | — | 6 | Fuel pump → |
| 2017 Mercedes-Benz E-Class | Engine | — | 4 | |
| 2016 Mercedes-Benz CLA-Class | Power Train | — | 3 | |
| 2018 Mercedes-Benz GLA-Class | Engine | — | 3 | |
| 2019 Mercedes-Benz Metris | Engine | — | 3 | |
| 2019 Mercedes-Benz E-Class | Unspecified | — | 2 | |
| 2016 Mercedes-Benz GLA-Class | Engine | — | 2 | |
| 2017 Infiniti Q60 | Engine | — | 1 | |
| 2021 Mercedes-Benz A-Class | Engine | — | 1 | |
| 2018 Mercedes-Benz CLA-Class | Engine | — | 1 | |
| 2019 Mercedes-Benz GLC-Class | Fuel/Propulsion System | — | 1 | Fuel pump → |
| 2018 Mercedes-Benz Metris | Engine | — | 1 | |
| 2017 Mercedes-Benz Metris | Engine | — | 1 |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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P052E by make
The same record, one make at a time: the model years, bulletins and owner reports that name P052E on that maker’s vehicles.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
My 2019 Mercedes-Benz Metris, with approximately 78,000 miles, developed a check-engine light and diagnostic code P052E/P052E71 for a failure involving the positive crankcase ventilation/crankcase ventilation regulator system
My 2016 Mercedes-Benz CLA 250 has a check engine light for code P052E, which points to a broken crankcase ventilation valve
My 2016 Mercedes-Benz CLA 250 (VIN: ) has a check engine light for code P052E, which points to a broken crankcase ventilation valve
My 2021 Mercedes-Benz A220 (M260 2.0L engine) triggered diagnostic fault code P052E, indicating a failure of the Positive Crankcase Ventilation (PCV) regulator valve / intake line assembly
Subject: Safety Complaint: 2017 Infiniti Q60 - Recurring P052E Fault (Engine Shared with Mercedes) Vehicle Information: Make: Infiniti Model: Q60 Year: 2017 Engine: (Insert Engine Size, 2.0L) Incident Details: Code: P052E (Crankcase…
A code names the test that failed. Not the part.
No manufacturer filing in NHTSA’s file names P052E. Owners’ reports are the record so far — and the model years they came from are above.
What P052E means
Source: SAE J2012 / OBD-IIP052E sits in the generic range of the OBD-II standard, so it means the same thing on every vehicle sold in the United States — but WhichTrim does not carry a definition for it and will not invent one. What is on this page is the record: who named it and on what.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about P052E
Source: NHTSA files and the OBD-II standardCan I keep driving with P052E stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.