P0304 on KIA SORENTO — Cylinder 4 Misfire Detected

Q: "What does P0304 mean on a KIA SORENTO?"

"P0304 indicates: Cylinder 4 Misfire Detected. This is a ignition system code. 9 KIA SORENTO owners have reported this to NHTSA."

Q: "What are the most common causes of P0304 on KIA SORENTO?"

"Based on 9 NHTSA reports, the most commonly cited components are: Engine, Electrical System,Engine,Fuel/Propulsion System, Fuel/Propulsion System. These percentages are based on the component field in owner complaints."

Q: "Is P0304 serious on my KIA SORENTO?"

"Of 9 NHTSA reports for this code on KIA SORENTO, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my KIA SORENTO 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 KIA SORENTO

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.

9 KIA SORENTO owners have reported this issue to NHTSA across model years 2013-2022. Most reports come from the 2013, 2014 model years. The most commonly reported component is Engine (44.4% of reports).

Real KIA SORENTO Owner Reports

Source: NHTSA Complaints Database

"On December 21, 2025, my vehicle experienced abnormal knocking/ticking sounds coming from the engine while driving on the interstate (60 mph), and it was difficult going up hills. The check engine light was intermittingly blinking, and there was a strong burning smell."

— 2013 KIA SORENTO owner · ENGINE · Filed 12/21/2025

"2/26/21 engine failure cylinder 4 loss of compression possibly due to debri in the engine during assembly. p0304 code misfire in cylinder 4. i have called other kia dealerships to ask if anyone else had this same issue and they told me yes."

— 2013 KIA SORENTO owner · ENGINE · Filed 02/26/2021

"Hi, I'm dealing with my Kia Sorento SX 2014, rpm and acceleration problems, for over two long years, sometimes shut off itself, some times codes shows up but no all the time, already changed spark plugs, High pressure fuel pump and the connector, two injectors, starter, MAP sensor, etc."

— 2014 KIA SORENTO owner · ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM · Filed 10/24/2020

"I'm dealing with my Kia Sorento 2014 SX for about two years a bit more, with acceleration problems and sometimes shut off itself when still I'm in D drive and the scary part still on the road with my family, brought theToronto and because isn't codes sometimes they don't know what the problem is, di"

— 2014 KIA SORENTO owner · FUEL/PROPULSION SYSTEM · Filed 11/18/2020

"We had issues with the TPMS in 2020. Took it to Tempe Kia on 7/30/2020. The following was done on vehicle. 1. Installed 37110 H7A00U 2."

— 2016 KIA SORENTO owner · POWER TRAIN,ENGINE · Filed 07/20/2021

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

📊 Complaint Trend by Model Year

2

'13

2

'14

1

'16

1

'18

2

'20

1

'22

Common Causes on KIA SORENTO

Based on NHTSA complaint component analysis for this vehicle.

ENGINE 44.4%

ELECTRICAL SYSTEM,ENGINE,FUEL/PROPULSION SYSTEM 11.1%

FUEL/PROPULSION SYSTEM 11.1%

POWER TRAIN,ENGINE 11.1%

ENGINE,FUEL/PROPULSION SYSTEM 11.1%

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 KIA SORENTO? ▾

P0304 indicates: Cylinder 4 Misfire Detected. This is a ignition system code. 9 KIA SORENTO owners have reported this to NHTSA.

What are the most common causes of P0304 on KIA SORENTO? ▾

Based on 9 NHTSA reports, the most commonly cited components are: Engine, Electrical System,Engine,Fuel/Propulsion System, Fuel/Propulsion System. These percentages are based on the component field in owner complaints.

Is P0304 serious on my KIA SORENTO? ▾

Of 9 NHTSA reports for this code on KIA SORENTO, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my KIA SORENTO 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.