P052E on Mercedes-Benz vehicles
P052E is named on 18 Mercedes-Benz model years (2016–2021): 0 manufacturer filings and 139 owner reports in NHTSA’s files, across C-Class, GLC-Class, Metris, E-Class, CLA-Class and 2 more.
Which Mercedes-Benz model years name P052E
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 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 GLC-Class | Fuel/Propulsion System | — | 6 |
| 2016 Mercedes-Benz Metris | Fuel/Propulsion System | — | 6 |
| 2017 Mercedes-Benz E-Class | Engine | — | 4 |
| 2019 Mercedes-Benz Metris | Engine | — | 3 |
| 2018 Mercedes-Benz GLA-Class | Engine | — | 3 |
| 2016 Mercedes-Benz CLA-Class | Power Train | — | 3 |
| 2019 Mercedes-Benz E-Class | Unspecified | — | 2 |
| 2016 Mercedes-Benz GLA-Class | Engine | — | 2 |
| 2021 Mercedes-Benz A-Class | Engine | — | 1 |
| 2019 Mercedes-Benz GLC-Class | Fuel/Propulsion System | — | 1 |
| 2018 Mercedes-Benz CLA-Class | Engine | — | 1 |
| 2018 Mercedes-Benz Metris | Engine | — | 1 |
| 2017 Mercedes-Benz Metris | Engine | — | 1 |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
What Mercedes-Benz owners said
Source: NHTSA complaint databaseOwners’ own words, scrubbed of anything identifying. Unverified reports filed with NHTSA — 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
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. The record above is what Mercedes-Benz and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P052E a known problem on Mercedes-Benz vehicles?
It is a documented one: NHTSA's files hold 0 manufacturer filings and 139 owner reports naming P052E on 18 Mercedes-Benz model years (2016–2021). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which Mercedes-Benz models does P052E appear on most?
2016 C-Class (44 documents), 2017 C-Class (23 documents), 2018 C-Class (20 documents).
Does P052E on a Mercedes-Benz mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.