The Lemon IndexCylinder 5 is not firing properly, so the engine runs rough and loses some power.
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. Then: fuel injector on cylinder 5; vacuum leak near that cylinder.
Owners named P0305 in 90 complaints to the U.S. government, most often on the Chrysler Pacifica.
Models that report it most
Complaints that name P0305, by model. Raw counts, not a failure rate: popular models get more complaints. Tap a model for its years, mileage and what owners say fixed it.
P0305 by model: P0305 Chrysler Pacifica (14)
Years owners report it on most: 2018 Chrysler Pacifica · 2017 Chrysler Pacifica · 2014 Jeep Wrangler · 2011 Ford F-Series · 2013 Ford F-Series · 2012 Ford F-Series
The details
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.
Can I drive 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.
74% of the owner complaints that name P0305 also say the car shakes, runs rough or misfires. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of P0305
- 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)
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Shakes, runs rough or misfires: 74% of complaints
- Loses power or goes into limp mode: 24% of complaints
- Stalls or shuts off: 23% of complaints
- Overheats: 13% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report P0305 most
2018 Chrysler Pacifica (7), 2017 Chrysler Pacifica (5), 2014 Jeep Wrangler (3), 2011 Ford F-Series (2), 2013 Ford F-Series (2), 2012 Ford F-Series (2).
Related codes
P0304 P0306 P0303 P0307 P0302 P0308 P0301 P0309
Quick answers
What does P0305 mean?
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.
Can I drive 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.
What causes P0305?
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).
Counts: NHTSA owner complaints whose text names P0305. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.