P0301 on JEEP WRANGLER — Cylinder 1 Misfire Detected

Q: "What does P0301 mean on a JEEP WRANGLER?"

"P0301 indicates: Cylinder 1 Misfire Detected. This is a ignition system code. 2 JEEP WRANGLER owners have reported this to NHTSA."

Q: "What are the most common causes of P0301 on JEEP WRANGLER?"

"Based on 2 NHTSA reports, the most commonly cited components are: Engine, Power Train,Engine,Fuel/Propulsion System. These percentages are based on the component field in owner complaints."

Q: "Is P0301 serious on my JEEP WRANGLER?"

"Of 2 NHTSA reports for this code on JEEP WRANGLER, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my JEEP WRANGLER shows P0301?"

"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 P0301 Means on Your JEEP WRANGLER

P0301 is a diagnostic trouble code indicating: Cylinder 1 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.

2 JEEP WRANGLER owners have reported this issue to NHTSA across model years 2012-2018. Most reports come from the 2012, 2018 model years. The most commonly reported component is Engine (50.0% of reports).

Real JEEP WRANGLER Owner Reports

Source: NHTSA Complaints Database

"I am reporting a persistent and safety-relevant defect in my 2012 Jeep Wrangler with the 3.6L Pentastar engine. The vehicle is experiencing misfires on multiple cylinders, especially cylinders 1 and 5, triggering codes P0300, P0301, and P0305."

— 2012 JEEP WRANGLER owner · ENGINE · Filed 05/11/2025

"My 2018 Jeep Wrangler JL Sport is experiencing multiple premature engine failures that present a serious safety risk: •Vehicle overheats while driving. •Recurrent misfire on Cylinder #5 (DTC P0305). •White exhaust smoke with a sweet coolant smell on cold start. •Coolant loss despite recent refill."

— 2018 JEEP WRANGLER owner · POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM · Filed 09/01/2025

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

📊 Complaint Trend by Model Year

1

'12

1

'18

Common Causes on JEEP WRANGLER

Based on NHTSA complaint component analysis for this vehicle.

ENGINE 50%

POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM 50%

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 P0301 mean on a JEEP WRANGLER? ▾

P0301 indicates: Cylinder 1 Misfire Detected. This is a ignition system code. 2 JEEP WRANGLER owners have reported this to NHTSA.

What are the most common causes of P0301 on JEEP WRANGLER? ▾

Based on 2 NHTSA reports, the most commonly cited components are: Engine, Power Train,Engine,Fuel/Propulsion System. These percentages are based on the component field in owner complaints.

Is P0301 serious on my JEEP WRANGLER? ▾

Of 2 NHTSA reports for this code on JEEP WRANGLER, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my JEEP WRANGLER shows P0301? ▾

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.