P2004 on Audi vehicles
P2004 is named on 27 Audi model years (2021–2024): 39 manufacturer filings and 0 owner reports in NHTSA’s files, across A4, A5, Q5, A3, A6 and 3 more.
Which Audi model years name P2004
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2024 Audi A4 | Engine | 2 | — |
| 2024 Audi A5 | Engine | 2 | — |
| 2024 Audi Q5 | Engine | 2 | — |
| 2023 Audi A4 | Engine | 2 | — |
| 2023 Audi A5 | Engine | 2 | — |
| 2023 Audi Q5 | Engine | 2 | — |
| 2022 Audi A4 | Engine | 2 | — |
| 2022 Audi A5 | Engine | 2 | — |
| 2022 Audi Q5 | Engine | 2 | — |
| 2021 Audi A4 | Engine | 2 | — |
| 2021 Audi A5 | Engine | 2 | — |
| 2021 Audi Q5 | Engine | 2 | — |
| 2024 Audi A3 | Engine | 1 | — |
| 2024 Audi A6 | Engine | 1 | — |
| 2024 Audi Q3 | Engine | 1 | — |
| 2024 Audi Q7 | Engine | 1 | — |
| 2024 Audi S3 | Engine | 1 | — |
| 2023 Audi A3 | Engine | 1 | — |
| 2023 Audi A6 | Engine | 1 | — |
| 2023 Audi Q3 | Engine | 1 | — |
| 2023 Audi Q7 | Engine | 1 | — |
| 2023 Audi S3 | Engine | 1 | — |
| 2022 Audi A3 | Engine | 1 | — |
| 2022 Audi A6 | Engine | 1 | — |
| 2022 Audi Q3 | Engine | 1 | — |
| 2022 Audi S3 | Engine | 1 | — |
| 2021 Audi A6 | 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.
Audi filings that name P2004
Source: NHTSA manufacturer communicationsBulletins and campaigns Audi filed with NHTSA whose summary names P2004. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- A0124312072273_2 Service bulletin2024-07-18 · Engine
- This bulletin provides information when the MIL is on; electric changeover valve N316 - P2004, P2006, P2014, P2015.
What P2004 means
Source: SAE J2012 / OBD-IIP2004 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 Audi 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 P2004 a known problem on Audi vehicles?
It is a documented one: NHTSA's files hold 39 manufacturer filings and 0 owner reports naming P2004 on 27 Audi model years (2021–2024). 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 Audi models does P2004 appear on most?
2024 A4 (2 documents), 2023 A4 (2 documents), 2022 A4 (2 documents).
Does P2004 on a Audi 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.