P0304 on FORD EDGE — Cylinder 4 Misfire Detected

Q: "What does P0304 mean on a FORD EDGE?"

"P0304 indicates: Cylinder 4 Misfire Detected. This is a ignition system code. 25 FORD EDGE owners have reported this to NHTSA."

Q: "What are the most common causes of P0304 on FORD EDGE?"

"Based on 25 NHTSA reports, the most commonly cited components are: Engine, Power Train,Engine, Engine And Engine Cooling,Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0304 serious on my FORD EDGE?"

"Of 25 NHTSA reports for this code on FORD EDGE, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my FORD EDGE 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 FORD EDGE

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.

25 FORD EDGE owners have reported this issue to NHTSA across model years 2015-2018. Most reports come from the 2017, 2016 model years. The most commonly reported component is Engine (84.0% of reports).

Real FORD EDGE Owner Reports

Source: NHTSA Complaints Database

"coolant intrusion in cylinders on the engine 2.7 ecoboost Ford made a bad engineering decision on the headers and block to allow coolant to flow through the gaskets to get to the other side of the cylinder."

— 2015 FORD EDGE owner · ENGINE · Filed 07/13/2024

"I bought my 2016 Ford Edge on May 30, 2025. Six weeks later it started with engine light coming on with code P0304, misfire in cylinder 4. Than white smoke from exhaust only at first morning startup."

— 2016 FORD EDGE owner · ENGINE · Filed 06/04/2025

"Check engine light was on and took to ford dealership and code is P0304. Coolant is leaking internally into cylinder."

— 2016 FORD EDGE owner · ENGINE · Filed 09/19/2024

"My 2016 Ford Edge equipped with a 2.0L EcoBoost engine had coolant leak into the engine cylinders and my check engine light came on. Upon contacting Ford, they said it happens and I should be fine to take a 1,046-mile road trip to Colorado and back home."

— 2016 FORD EDGE owner · ENGINE · Filed 11/08/2023

"The contact owns a 2016 Ford Edge. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The contact stated that he used a code reader to diagnose the vehicle and retrieved code: P0304."

— 2016 FORD EDGE owner · ENGINE AND ENGINE COOLING,ENGINE · Filed 08/01/2023

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

📊 Complaint Trend by Model Year

1

'15

8

'16

14

'17

2

'18

Common Causes on FORD EDGE

Based on NHTSA complaint component analysis for this vehicle.

ENGINE 84%

POWER TRAIN,ENGINE 8%

ENGINE and ENGINE COOLING,ENGINE 4%

ENGINE and ENGINE COOLING 4%

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 FORD EDGE? ▾

P0304 indicates: Cylinder 4 Misfire Detected. This is a ignition system code. 25 FORD EDGE owners have reported this to NHTSA.

What are the most common causes of P0304 on FORD EDGE? ▾

Based on 25 NHTSA reports, the most commonly cited components are: Engine, Power Train,Engine, Engine And Engine Cooling,Engine. These percentages are based on the component field in owner complaints.

Is P0304 serious on my FORD EDGE? ▾

Of 25 NHTSA reports for this code on FORD EDGE, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my FORD EDGE 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.