The Lemon IndexCylinder 2 is not firing properly, so the engine runs rough and loses some power. Full P0302 page
15 owner complaints · the #4 code Honda Accord owners name · 8% of Honda Accord complaints that name a code (every car: 2.7%)
2011–2024 Honda Accord · most: 2019 (6), 2018 (6), 2024 (1)
Honda Accord owners named P0302 in 15 complaints to the U.S. government (NHTSA), most often on the 2019, 2018 and 2024 model years. The part they name most is the head gasket (6 complaints). Complaints are owner reports, not proof of a defect.
Honda Accord model years that report P0302
Owner complaints naming P0302, by model year. Raw counts: years that sold more get more complaints, so this is each model year's record, not a failure rate.
What owners say caused it or fixed it
The most-named part is the head gasket, in 6 of the 15 complaints (40%). 4 of those mention it being replaced or repaired, and 1 say the problem came back afterwards. Next: spark plugs (6), ignition coils (3) and fuel pump (2).
- Head gasket or coolant in a cylinder6 complaints4 mention a repair or replacement, 1 of them says the problem came back · what Honda Accord owners paid
- Spark plugs6 complaints4 mention a repair or replacement, 3 of them say the problem came back · what Honda Accord owners paid
- Ignition coils3 complaints2 mention a repair or replacement, 2 of them say the problem came back · what owners paid
- Fuel pump2 complaints2 mention a repair or replacement, 1 of them says the problem came back · what Honda Accord owners paid
- Fuel injectors2 complaints1 mentions a repair or replacement, 1 of them says the problem came back · what Honda Accord owners paid
5 complaints mention a recall and 4 mention a warranty.
Counted from the owners' own words: a part counts when a sentence names it with a cause or repair word. What owners wrote, not a diagnosis. A shop should confirm the cause before replacing parts.
Symptoms owners describe with P0302
47% of these complaints say the check engine light came on.
- Shakes, runs rough or misfires87%13 of 15 complaints
- Loses power or goes into limp mode53%8 of 15 complaints
- Warning lights and electrical faults33%5 of 15 complaints
- Overheats27%4 of 15 complaints
- Stalls or shuts off20%3 of 15 complaints
- Transmission slips or shifts hard13%2 of 15 complaints
Share of the complaints naming P0302 whose text also describes each problem. A complaint can describe more than one.
Codes owners report with it
P0303 7 P0300 5 P0301 3 P0304 3
Other codes named in the same Honda Accord complaints, and in how many.
Repair costs
Honda Accord head gasket replacement cost · Honda Accord spark plug replacement cost · Honda Accord fuel pump replacement cost · Honda Accord fuel injector replacement cost
Keep going
- P0302: meaning, causes and every car that reports it
- Honda Accord reliability by year
- 2019 Honda Accord problems and recalls
Other codes Honda Accord owners report
P0303 P0304 P0301 P0300 P0087 P0741
P0302 on other cars
Ford Escape (81) · Ford Edge (63) · Ford Fusion (35) · Honda CR-V (19) · Dodge Grand Caravan (14) · Honda Odyssey (12) · Jeep Wrangler (11) · Kia Soul (10)
The details
How we count
We read every owner complaint in the NHTSA file whose text names this trouble code, and count the ones filed about this model (matched by the make, model and model year on the complaint). Mileage is what the owner entered on the form.
Parts: a complaint counts for a part when one of the owner's own sentences names that part together with a cause word (failed, bad, diagnosed, caused by, leaking ...) or a repair word (replaced, repaired, new, reprogrammed ...). "Came back" means the same complaint also says the problem returned or the repair didn't fix it. These are counts of what owners wrote, not a diagnosis, and one complaint can name several parts.
Complaints are reports, not proof of a defect, and most owners never file one. Popular models get more complaints, so the counts are not a failure rate. The code meaning is the standard SAE J2012 definition in our own words, or the carmaker's meaning where we verified it for that make.
What P0302 means
Cylinder 2 is not firing properly, so the engine runs rough and loses some power. A flashing check engine light means the misfire is serious enough to damage the catalytic converter, so slow down and get it checked right away.
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
- Spark plug or ignition coil on cylinder 2
- Fuel injector on cylinder 2
- Vacuum leak near that cylinder
- Low compression (valve or piston ring problem)
Check the complaints yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11763151, 11762909, 11762060, 11761480, 11747924, 11745174, 11736450, 11734550, 11730158, 11720728, 11695045, 11693248 and 3 more.
Quick answers
What does P0302 mean on a Honda Accord?
Cylinder 2 Misfire Detected. Cylinder 2 is not firing properly, so the engine runs rough and loses some power. A flashing check engine light means the misfire is serious enough to damage the catalytic converter, so slow down and get it checked right away.
Which Honda Accord years have the most P0302 complaints?
In complaints to NHTSA, owners of the 2019 (6), 2018 (6), 2024 (1) Honda Accord named P0302 most (15 complaints in all, 2011–2024). Raw counts, not a failure rate.
What fixes P0302 on a Honda Accord?
Owners most often name the head gasket (6 of 15 complaints), then spark plugs and ignition coils. That's what owners wrote, not a diagnosis: have a shop confirm the cause with a scan and tests before replacing parts.
Can I drive my Honda Accord with P0302?
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
Sources: NHTSA owner complaints that name P0302 on the Honda Accord, counted by The Lemon Index; NHTSA recalls; repair bills owners named. Meanings: SAE J2012 in our own words. Owner reports, not a diagnosis or repair advice for your car.