The Lemon IndexCylinder 5 is not firing properly, so the engine runs rough and loses some power. Full P0305 page
14 owner complaints · the #3 code Chrysler Pacifica owners name · 8% of Chrysler Pacifica complaints that name a code (every car: 0.6%)
2005–2019 Chrysler Pacifica · most: 2018 (7), 2017 (5), 2019 (1)
Chrysler Pacifica owners named P0305 in 14 complaints to the U.S. government (NHTSA), most often on the 2018, 2017 and 2019 model years. The part they name most is the head gasket (6 complaints). Complaints are owner reports, not proof of a defect.
Chrysler Pacifica model years that report P0305
Owner complaints naming P0305, by model year. Raw counts: years that sold more get more complaints, so this is each model year's record, not a failure rate.
What owners say caused it or fixed it
The most-named part is the head gasket, in 6 of the 14 complaints (43%). 3 of those mention it being replaced or repaired. Next: ignition coils (3), spark plugs (3) and engine (replaced or rebuilt) (2).
- Head gasket or coolant in a cylinder6 complaints3 mention a repair or replacement · what Chrysler Pacifica owners paid
- Ignition coils3 complaints3 mention a repair or replacement, 2 of them say the problem came back · what owners paid
- Spark plugs3 complaints3 mention a repair or replacement · what owners paid
- Engine replaced or rebuilt2 complaints2 mention a repair or replacement · what Chrysler Pacifica owners paid
4 complaints mention a recall and 6 mention a warranty.
Counted from the owners' own words: a part counts when a sentence names it with a cause or repair word. What owners wrote, not a diagnosis. A shop should confirm the cause before replacing parts.
Symptoms owners describe with P0305
64% of these complaints say the check engine light came on.
- Shakes, runs rough or misfires71%10 of 14 complaints
- Overheats50%7 of 14 complaints
- Stalls or shuts off21%3 of 14 complaints
- Loses power or goes into limp mode14%2 of 14 complaints
Share of the complaints naming P0305 whose text also describes each problem. A complaint can describe more than one.
Repair costs
Chrysler Pacifica head gasket replacement cost · Chrysler Pacifica engine replacement cost
Keep going
- P0305: meaning, causes and every car that reports it
- Chrysler Pacifica reliability by year
- 2018 Chrysler Pacifica problems and recalls
Other codes Chrysler Pacifica owners report
The details
How we count
We read every owner complaint in the NHTSA file whose text names this trouble code, and count the ones filed about this model (matched by the make, model and model year on the complaint). Mileage is what the owner entered on the form.
Parts: a complaint counts for a part when one of the owner's own sentences names that part together with a cause word (failed, bad, diagnosed, caused by, leaking ...) or a repair word (replaced, repaired, new, reprogrammed ...). "Came back" means the same complaint also says the problem returned or the repair didn't fix it. These are counts of what owners wrote, not a diagnosis, and one complaint can name several parts.
Complaints are reports, not proof of a defect, and most owners never file one. Popular models get more complaints, so the counts are not a failure rate. The code meaning is the standard SAE J2012 definition in our own words, or the carmaker's meaning where we verified it for that make.
What P0305 means
Cylinder 5 is not firing properly, so the engine runs rough and loses some power. A flashing check engine light means the misfire is serious enough to damage the catalytic converter, so slow down and get it checked right away.
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
- Spark plug or ignition coil on cylinder 5
- Fuel injector on cylinder 5
- Vacuum leak near that cylinder
- Low compression (valve or piston ring problem)
Check the complaints yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11762395, 11747754, 11657398, 11652149, 11622063, 11593425, 11531350, 11521818, 11520020, 11514012, 11511263, 11482627 and 2 more.
Quick answers
What does P0305 mean on a Chrysler Pacifica?
Cylinder 5 Misfire Detected. Cylinder 5 is not firing properly, so the engine runs rough and loses some power. A flashing check engine light means the misfire is serious enough to damage the catalytic converter, so slow down and get it checked right away.
Which Chrysler Pacifica years have the most P0305 complaints?
In complaints to NHTSA, owners of the 2018 (7), 2017 (5), 2019 (1) Chrysler Pacifica named P0305 most (14 complaints in all, 2005–2019). Raw counts, not a failure rate.
What fixes P0305 on a Chrysler Pacifica?
Owners most often name the head gasket (6 of 14 complaints), then ignition coils and spark plugs. That's what owners wrote, not a diagnosis: have a shop confirm the cause with a scan and tests before replacing parts.
Can I drive my Chrysler Pacifica with P0305?
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
Sources: NHTSA owner complaints that name P0305 on the Chrysler Pacifica, counted by The Lemon Index; NHTSA recalls; repair bills owners named. Meanings: SAE J2012 in our own words. Owner reports, not a diagnosis or repair advice for your car.