Last reported case: 8 years ago
Based on 3 owner reports, 3 from forums)
What is P0301?
P0301 is a critical powertrain code indicating the engine's computer has detected a misfire specifically in cylinder 1. This means fuel is not burning properly in that cylinder, which can cause severe engine damage if driven for long. Based on real owner data, this code is most frequently reported in vehicles like the Honda Accord, Ford Mustang, and Chevrolet Spark, and the average repair cost is $2763.
Common Causes:
- Ignition system failure (spark plugs or coils) is the most common cause, based on typical misfire diagnostics.
- Fuel delivery issues (clogged injector or low fuel pressure) to cylinder 1 are a frequent culprit.
- Mechanical engine problems (like low compression from a worn valve or piston) can trigger this code, especially in high-mileage vehicles like the 2010 Honda Accord with 190k miles mentioned in reports.
Symptoms:
- A noticeable shaking or vibration from the engine, especially at idle or under acceleration, is the most commonly reported symptom.
- The check engine light will flash or stay illuminated, often accompanied by a loss of engine power.
- Owners may report rough idling, hesitation during acceleration, or increased fuel consumption.
🚗P0301 on 2010 JEEP Liberty
This page focuses specifically on P0301 issues reported by 2010 JEEP Liberty owners. The experiences and fixes below are from real owners of this exact vehicle.
Symptoms Reported by 2010 JEEP Liberty Owners:
Parts Often Involved:
What Owners Say
Real experiences from 2010 JEEP Liberty owners
“It has been using about a quart of oil a month but we've been staying on top of that. The real issue is the P0301 recently due to a coolant leak that went undetected till she told me she was having issues with it cranking and heard a warning dinging sound.”View original
“This led to the leaner burn in cylinder 1 and my not fixing the sensor to begin with. A 2002 V6 3.7l with 157,000 miles and a $800 job for damaged cylinders just did not add up dollars and cents wise so I opted for the Sealer.”View original
“A 2002 V6 3.7l with 157,000 miles and a $800 job for damaged cylinders just did not add up dollars and cents wise so I opted for the Sealer. It did seal the leak that much is sure but it still ideals rough an will stall out occasionally when you stop.”View original
“He estimates labor and parts to be around $800. Another mechanic says try the sealer but I need this car running for my daughter this summer and hopefully one more year of HS.”View original
“Started out the other day with the CEL flashing and pulling out of street engine was missing real bad . Came back shut it off for an hour and tried again and it ran fine but the CEL is on (not flashing) but still shows p0301. any suggestions?”View original
“Having an issue with my 2002 3.7. Started out the other day with the CEL flashing and pulling out of street engine was missing real bad .”View original
These are real experiences shared by 2010 JEEP Liberty owners on automotive forums and communities. Results may vary based on vehicle condition and repair quality.
About This Data
This page aggregates 3 discussions about P0301 from 2010 JEEP Liberty owners across automotive communities.
Success rate (0%) is calculated from posts where owners confirmed whether their fix resolved the issue.
Last updated: 5/26/2017