P0304 on HONDA PILOT — Cylinder 4 Misfire Detected

Q: "What does P0304 mean on a HONDA PILOT?"

"P0304 indicates: Cylinder 4 Misfire Detected. This is a ignition system code. 10 HONDA PILOT owners have reported this to NHTSA."

Q: "What are the most common causes of P0304 on HONDA PILOT?"

"Based on 10 NHTSA reports, the most commonly cited components are: Engine, Fuel/Propulsion System, Power Train,Electronic Stability Control (Esc),Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0304 a safety concern on HONDA PILOT?"

"Of 10 NHTSA reports for P0304 on HONDA PILOT, 1 involved a crash. Always consult a qualified mechanic for any diagnostic trouble code."

Q: "What should I do if my HONDA PILOT shows P0304?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What P0304 Means on Your HONDA PILOT

P0304 is a diagnostic trouble code indicating: Cylinder 4 Misfire Detected. This code relates to the ignition system system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

10 HONDA PILOT owners have reported this issue to NHTSA across model years 2011-2019. Most reports come from the 2016, 2013 model years.

Real HONDA PILOT Owner Reports

Source: NHTSA Complaints Database

"P0301 through p0304 honda engine misfire settlement honda manipulate the dealer to make false allegations and the vehicle they refuse to repair it. i wish to have the truth come to light how they refuse to service and take accountability to repair the vehicle."

— 2011 HONDA PILOT owner · POWER TRAIN,ELECTRONIC STABILITY CONTROL (ESC),ENGINE · Filed 05/28/2017

"MIL comes on with DTCsP0301 through P0304 Car is available for inspection. Dealer confirmed along with independent service center."

— 2012 HONDA PILOT owner · ENGINE · Filed 03/22/2023

"While driving vehicle obd shows code p0304. vehicle had poor acceleration while misfiring. took vehicle into honda dealership and they state a re-ring of four cylinders needed."

— 2013 HONDA PILOT owner · ENGINE · Filed 12/27/2020

"The car has engine check light and traction lights are on. mechanic diagnosed the codes to match a recall which my vin is excluded even thought i am facing the same exact issue. piston misfiring and the engine can lock at any time causing an accident."

— 2013 HONDA PILOT owner · SEATS,ENGINE · Filed 05/20/2020

"My 2014 Honda Pilot has intermittent engine misfires (DTCs P0301–P0304) caused by piston ring failure. The defect leads to rough running, sudden loss of power, and unsafe driving conditions."

— 2014 HONDA PILOT owner · POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM · Filed 10/24/2024

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'11

1

'12

2

'13

1

'14

1

'15

3

'16

1

'19

Common Causes on HONDA PILOT

Based on NHTSA complaint component analysis for this vehicle.

ENGINE 30%

FUEL/PROPULSION SYSTEM 20%

POWER TRAIN,ELECTRONIC STABILITY CONTROL (ESC),ENGINE 10%

SEATS,ENGINE 10%

POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM 10%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0304 mean on a HONDA PILOT? ▾

P0304 indicates: Cylinder 4 Misfire Detected. This is a ignition system code. 10 HONDA PILOT owners have reported this to NHTSA.

What are the most common causes of P0304 on HONDA PILOT? ▾

Based on 10 NHTSA reports, the most commonly cited components are: Engine, Fuel/Propulsion System, Power Train,Electronic Stability Control (Esc),Engine. These percentages are based on the component field in owner complaints.

Is P0304 a safety concern on HONDA PILOT? ▾

Of 10 NHTSA reports for P0304 on HONDA PILOT, 1 involved a crash. Always consult a qualified mechanic for any diagnostic trouble code.

What should I do if my HONDA PILOT shows P0304? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.