P0304 on HONDA CR-V — Cylinder 4 Misfire Detected

Q: "What does P0304 mean on a HONDA CR-V?"

"P0304 indicates: Cylinder 4 Misfire Detected. This is a ignition system code. 11 HONDA CR-V owners have reported this to NHTSA."

Q: "What are the most common causes of P0304 on HONDA CR-V?"

"Based on 11 NHTSA reports, the most commonly cited components are: Power Train,Engine,Fuel/Propulsion System, Fuel/Propulsion System,Forward Collision Avoidance, Power Train,Electrical System,Fuel/Propulsion System. These percentages are based on the component field in owner complaints."

Q: "Is P0304 serious on my HONDA CR-V?"

"Of 11 NHTSA reports for this code on HONDA CR-V, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my HONDA CR-V 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 CR-V

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.

11 HONDA CR-V owners have reported this issue to NHTSA across model years 2017-2019. Most reports come from the 2017, 2018 model years.

Real HONDA CR-V Owner Reports

Source: NHTSA Complaints Database

"On startup all safety warning lights flashed on and disabled all safety driving aids. This persisted and took to Honda dealer. Their diagnostics revealed faulty fuel injectors with code P0304 failed number 4 cylinder. Recommend replacing fuel injector go for $2000."

— 2017 HONDA CR-V owner · FUEL/PROPULSION SYSTEM,FORWARD COLLISION AVOIDANCE · Filed 05/01/2025

"The vehicle experienced multiple system failures, indicated by error messages in 11 different systems, including the check engine light."

— 2017 HONDA CR-V owner · POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM · Filed 07/15/2024

"I own a 2017 Honda CRV EX AWD. While driving downhill on a mountain road on Dec. 9, 2023, all of my dashboard warning lights and alarms began flashing and sounding off. Some of the warnings cycled through one after another while others were simultaneous."

— 2017 HONDA CR-V owner · VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM · Filed 12/09/2023

"When I was driving on highway when moving from Texas to Indiana, about 11 warning lights were suddenly on."

— 2017 HONDA CR-V owner · FUEL/PROPULSION SYSTEM,FORWARD COLLISION AVOIDANCE,LANE DEPARTURE · Filed 10/05/2023

"Fuel injector for Cylinder 3 failed. This has been a 6 month issue starting with simple cold start issue misfire with cylinder 3 (didn't know this was the issue then)."

— 2017 HONDA CR-V owner · ENGINE,FUEL/PROPULSION SYSTEM · Filed 06/11/2022

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

📊 Complaint Trend by Model Year

7

'17

3

'18

1

'19

Common Causes on HONDA CR-V

Based on NHTSA complaint component analysis for this vehicle.

POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM 27.3%

FUEL/PROPULSION SYSTEM,FORWARD COLLISION AVOIDANCE 18.2%

POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM 9.1%

VEHICLE SPEED CONTROL,ENGINE,FUEL/PROPULSION SYSTEM 9.1%

FUEL/PROPULSION SYSTEM,FORWARD COLLISION AVOIDANCE,LANE DEPARTURE 9.1%

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 CR-V? ▾

P0304 indicates: Cylinder 4 Misfire Detected. This is a ignition system code. 11 HONDA CR-V owners have reported this to NHTSA.

What are the most common causes of P0304 on HONDA CR-V? ▾

Based on 11 NHTSA reports, the most commonly cited components are: Power Train,Engine,Fuel/Propulsion System, Fuel/Propulsion System,Forward Collision Avoidance, Power Train,Electrical System,Fuel/Propulsion System. These percentages are based on the component field in owner complaints.

Is P0304 serious on my HONDA CR-V? ▾

Of 11 NHTSA reports for this code on HONDA CR-V, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my HONDA CR-V 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.