P0303 on Honda vehicles Cylinder 3 is misfiring
P0303 is named on 19 Honda model years (2016–2024): 94 manufacturer filings and 50 owner reports in NHTSA’s files, across CR-V, Civic, Odyssey, Accord, Pilot and 2 more.
Which Honda model years name P0303
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2017 Honda CR-V | Engine | 20 | 10 |
| 2018 Honda CR-V | Engine | 20 | 9 |
| 2018 Honda Civic | Engine | 15 | 1 |
| 2016 Honda Civic | Engine | 15 | 1 |
| 2017 Honda Civic | Engine | 15 | — |
| 2016 Honda Odyssey | Engine | 4 | 5 |
| 2018 Honda Accord | Engine | — | 8 |
| 2017 Honda Odyssey | Engine | 4 | — |
| 2016 Honda Pilot | Engine | — | 4 |
| 2019 Honda Accord | Engine | — | 3 |
| 2018 Honda Fit | Electrical System | — | 2 |
| 2024 Honda CR-V | Unspecified | — | 1 |
| 2022 Honda CR-V | Engine | — | 1 |
| 2022 Honda Ridgeline | Engine | — | 1 |
| 2021 Honda Accord | Engine | — | 1 |
| 2021 Honda Ridgeline | Engine | — | 1 |
| 2019 Honda Odyssey | Engine | — | 1 |
| 2018 Honda Odyssey | Engine | — | 1 |
| 2016 Honda Fit | 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 Honda 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.
The diagnostic trouble codes found on the vehicle are: P0300 – Random/Multiple Cylinder Misfire P0302 – Cylinder #2 Misfire P0303 – Cylinder #3 Misfire P219A – Air-Fuel Ratio Variation P0420 – Catalyst System Efficiency Below Threshold I…
Honda filings that name P0303
Source: NHTSA manufacturer communicationsBulletins and campaigns Honda filed with NHTSA whose summary names P0303. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- A18-114 Service bulletin2018-10-22 · Engine And Engine Cooling
- Service bulletin - Under certain circumstances, the vehicle may experience driveability concerns, which may result in DTC's P0300 (Random Misfire Detected), P0301 (No. 1 Cylinder Misfire Detected), P0302 (No. 2 Cylinder Misfire Detected), P0303 (No. 3 Cylinder Misfire Detected), P0304 (No. 4 Cylinder Misfire Detected), or P0172 (Fuel System Too Rich) to set.
- A18-124 Service bulletin2018-10-22 · Engine And Engine Cooling
- Service bulletin - Under certain circumstances, the vehicle may experience driveability concerns, which may result in DTC's P0300 (Random Misfire Detected), P0301 (No. 1 Cylinder Misfire Detected), P0302 (No. 2 Cylinder Misfire Detected), P0303 (No. 3 Cylinder Misfire Detected), P0304 (No. 4 Cylinder Misfire Detected), or P0172 (Fuel System Too Rich) to set.
- A18-114 Service bulletin2018-12-07 · Electrical System — Software
- "Service bulletin - Under certain circumstances, the vehicle may experience driveability concerns, which may result in DTC's P0300 (Random Misfire Detected), P0301 (No. 1 Cylinder Misfire Detected), P0302 (No. 2 Cylinder Misfire Detected), P0303 (No. 3 Cylinder Misfire Detected), P0304 (No. 4 Cylinder Misfire Detected), or P0172 (Fuel System Too Rich) to set."
- A18-137 Service bulletin2018-12-21 · Equipment — Appliance — Air Conditioner
- "Service bulletin - Under certain circumstances, the vehicle may experience driveability issues which may result in DTCs P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich)."
- A18-137_V2 Service bulletin2018-12-22 · Engine
- "Service bulletin - Under certain circumstances, the vehicle may experience driveability issues which may result in DTCs P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich)."
- A18-137 Service bulletin2019-01-12 · Equipment — Appliance — Air Conditioner
- "Service bulletin - Under certain circumstances, the vehicle may experience driveability issues which may result in DTCs P0300 (random misfire detected), P0301 (No. 1 cylinder misfire detected), P0302 (No. 2 cylinder misfire detected), P0303 (No. 3 cylinder misfire detected), P0304 (No. 4 cylinder misfire detected), or P0172 (fuel system too rich)."
- A25-061 Service bulletin2025-07-18 · Engine
- Service Bulletin - The piston ring function deteriorates due to ring wear and sticking from sludge. Oil from the crankcase adheres to the spark plug leading to carbon fouling and misfire. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on.
- ONL6Z6072025 Other2025-07-29 · Engine
- Owner Notification Letter - the piston ring function can deteriorate due to ring low wear toughness and sticking from sludge. Oil adheres to the spark plug leading to carbon fouling and misfire. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the Malfunction Indic
- A25-061 Service bulletin2025-08-29 · Engine
- Service Bulletin - The piston ring function deteriorates due to ring low wear toughness and sticking from sludge. Oil adheres to the spark plug leading to carbon fouling and misfire. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on.
- A16-034 Service bulletin2022-02-18 · Engine And Engine Cooling
- Service Bulletin - 2015-16 Fit: MIL Is On with DTC P0300, P0301, P0302, P0303, P0304
What P0303 means
Source: SAE J2012 / OBD-IICylinder 3 is misfiring.
A stored code names the test that failed, never the part that caused it. The record above is what Honda 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 P0303 a known problem on Honda vehicles?
It is a documented one: NHTSA's files hold 94 manufacturer filings and 50 owner reports naming P0303 on 19 Honda model years (2016–2024). 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 Honda models does P0303 appear on most?
2017 CR-V (30 documents), 2018 CR-V (29 documents), 2018 Civic (16 documents).
Does P0303 on a Honda 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.