P0303 on CHRYSLER PACIFICA
Cylinder 3 Misfire Detected
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Chrysler Pacifica context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0303.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
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. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
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."
"I purchased my 2017 in 2023. Within a few months, problems began."
"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."
"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."
"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."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on CHRYSLER PACIFICA
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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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.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.