P0304 on Chrysler vehicles Cylinder 4 is misfiring
P0304 is named on 15 Chrysler model years (2016–2025): 17 manufacturer filings and 2 owner reports in NHTSA’s files, across Pacifica, Town and Country, Voyager.
Which Chrysler model years name P0304
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2020 Chrysler Pacifica | Electrical System | 3 | — |
| 2021 Chrysler Pacifica | Electrical System | 2 | — |
| 2018 Chrysler Pacifica | Engine | 1 | 1 |
| 2025 Chrysler Pacifica | Engine | 1 | — |
| 2025 Chrysler Voyager | Engine | 1 | — |
| 2024 Chrysler Pacifica | Engine | 1 | — |
| 2024 Chrysler Voyager | Engine | 1 | — |
| 2023 Chrysler Pacifica | Engine | 1 | — |
| 2023 Chrysler Voyager | Engine | 1 | — |
| 2022 Chrysler Pacifica | Engine | 1 | — |
| 2022 Chrysler Voyager | Engine | 1 | — |
| 2021 Chrysler Voyager | Engine | 1 | — |
| 2020 Chrysler Voyager | Engine | 1 | — |
| 2019 Chrysler Pacifica | Engine | 1 | — |
| 2016 Chrysler Town and Country | 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.
Chrysler filings that name P0304
Source: NHTSA manufacturer communicationsBulletins and campaigns Chrysler filed with NHTSA whose summary names P0304. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- 09-013-20 Service bulletin2020-12-05 · Electrical System
- 3.6L Pentastar Upgrade Spark Plug Internal Crack This bulletin involves replacing all six spark plugs. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set:P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cyli
- 09-013-20 REV. A Service bulletin2020-12-12 · Electrical System
- 3.6L Pentastar Upgrade Spark Plug Internal Crack This bulletin involves replacing all six spark plugs. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set:P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cyli
- 09-011-25 Service bulletin2025-05-18 · Engine
- "Misfire Diagnostic Trouble Codes (DTCs), Rough Idle, Valvetrain Noise Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0301 - Cylinder 1 Misfire. ● P0302 - Cylinder 2 Misfire. ● P0303 - Cylinder 3 Misfire. ● P0304 - Cylinder 4 Misfire. ● P0305 - Cylinder 5 Misfire. ● P0306 - Cy
What P0304 means
Source: SAE J2012 / OBD-IICylinder 4 is misfiring.
A stored code names the test that failed, never the part that caused it. The record above is what Chrysler 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 P0304 a known problem on Chrysler vehicles?
It is a documented one: NHTSA's files hold 17 manufacturer filings and 2 owner reports naming P0304 on 15 Chrysler model years (2016–2025). 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 Chrysler models does P0304 appear on most?
2020 Pacifica (3 documents), 2021 Pacifica (2 documents), 2018 Pacifica (2 documents).
Does P0304 on a Chrysler 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.