P0303 on CHRYSLER PACIFICA — Cylinder 3 Misfire Detected

Q: "What does P0303 mean on a CHRYSLER PACIFICA?"

"P0303 indicates: Cylinder 3 Misfire Detected. This is a ignition system code. 28 CHRYSLER PACIFICA owners have reported this to NHTSA."

Q: "What are the most common causes of P0303 on CHRYSLER PACIFICA?"

"Based on 28 NHTSA reports, the most commonly cited components are: Engine, Power Train,Engine, Unknown Or Other,Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0303 serious on my CHRYSLER PACIFICA?"

"Of 28 NHTSA reports for this code on CHRYSLER PACIFICA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my CHRYSLER PACIFICA shows P0303?"

"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 P0303 Means on Your CHRYSLER PACIFICA

P0303 is a diagnostic trouble code indicating: Cylinder 3 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.

28 CHRYSLER PACIFICA owners have reported this issue to NHTSA across model years 2017-2020. Most reports come from the 2017, 2018 model years. The most commonly reported component is Engine (60.7% of reports).

Real CHRYSLER PACIFICA Owner Reports

Source: NHTSA Complaints Database

"Check engine light on. P0303 Cylinder 3 Misfire Detected, My maintenance history : Coil is good, only been 27,000 mile since I replaced 6xspark plugs, replaced 1 fuel injector just a week a go, still got engine light on."

— 2017 CHRYSLER PACIFICA owner · ENGINE · Filed 07/18/2024

"I purchased my 2017 in 2023. Within a few months, problems began."

— 2017 CHRYSLER PACIFICA owner · POWER TRAIN,ELECTRICAL SYSTEM,ENGINE · Filed 03/15/2024

"Engine code P0303 (misfire cylinder 3 was triggered) car was found to be losing coolant through the cylinder. Chrysler dealer declared complete engine failure due to block damage. Stellantis indicated repair exceeded value of the vehicle."

— 2017 CHRYSLER PACIFICA owner · ENGINE · Filed 03/27/2024

"Hotter than normal engine heat. Smells very hot even when driving in cabin like some liquid ( maybe Coolant) is burning. Code P0303. Misfire #3 cylinder. Reported issue to dealer several times. Very hot.. paint on hood bubbling. They repaired paint per 100,000 mile 7 year extended warranty."

— 2017 CHRYSLER PACIFICA owner · ENGINE · Filed 03/28/2024

"I received a P0303 engine misfire code. I have noticed a very slow coolant leak. Thankfully I noticed the leak before the coolant ran out or else the car could have overheated and left me in a very dangerous situation. My mechanic ran a test and confirmed that there is a blown head gasket."

— 2017 CHRYSLER PACIFICA owner · ENGINE · Filed 10/01/2023

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

📊 Complaint Trend by Model Year

13

'17

11

'18

2

'19

2

'20

Common Causes on CHRYSLER PACIFICA

Based on NHTSA complaint component analysis for this vehicle.

ENGINE 60.7%

POWER TRAIN,ENGINE 17.9%

UNKNOWN or OTHER,ENGINE 7.1%

POWER TRAIN,ELECTRICAL SYSTEM,ENGINE 3.6%

POWER TRAIN,ELECTRICAL SYSTEM 3.6%

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 P0303 mean on a CHRYSLER PACIFICA? ▾

P0303 indicates: Cylinder 3 Misfire Detected. This is a ignition system code. 28 CHRYSLER PACIFICA owners have reported this to NHTSA.

What are the most common causes of P0303 on CHRYSLER PACIFICA? ▾

Based on 28 NHTSA reports, the most commonly cited components are: Engine, Power Train,Engine, Unknown Or Other,Engine. These percentages are based on the component field in owner complaints.

Is P0303 serious on my CHRYSLER PACIFICA? ▾

Of 28 NHTSA reports for this code on CHRYSLER PACIFICA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my CHRYSLER PACIFICA shows P0303? ▾

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.