P0303Critical Priority
Cylinder 3 Misfire Detected
Category: Powertrain• Ignition System / Misfire
34 articles · 5 makes affected
Owner Data Insights
Most Effective Fixes for P0303
Based on 18 owner reports. Success rates show how often each fix resolved the issue.
0% success
9 reports
0% success
9 reports
Start with the highest success rate fix when diagnosing P0303. If that doesn't resolve the issue, work down the list.
Frequently Appears With P0303
These codes often appear together in owner reports. Check these if you see P0303.
- P030016 reports
- P03019 reports
- P03042 reports
- P03052 reports
- P01022 reports
- P01132 reports
- P12362 reports
- P01722 reports
Based on analysis of 37 owner reports where multiple codes appeared together.
Owner Statistics for P0303
Based on 90 real owner discussions • 22 confirmed solutions
$280
Average Repair Cost
24%
Success Rate
90
Data Sources
About This Data
Statistics are aggregated from real owner discussions on Reddit, automotive forums, and YouTube comments. All data is anonymized and represents actual repair experiences reported by vehicle owners.
P0303 Issues by Vehicle
FORD
2015 F-150
2015 Ford F-150 Coolant Leak? Here's How to Fix It
100 sources
2010 Expedition
2010 Ford Expedition Slipping: How to Diagnose and Fix It
100 sources
2010 Expedition
How to Fix a Clicking Noise on Your 2010 Ford Expedition
100 sources
2015 F-150
2015 F-150 Hard Start? How to Diagnose and Fix It
100 sources
2010 Mustang
How to Fix Intake Leaks on Your 2010 Ford Mustang
83 sources
2020 F-150
How to Fix a P0303 Misfire Code on Your 2020 Ford F-150
9 sources
2015 F-150
Humming Noise from Your 2015 F-150? Here's How to Fix It
100 sources
2015 F-150
How to Fix an Oil Leak on Your 2015 Ford F-150 (Solenoid Focus)
100 sources
2015 F-150
Why is My 2015 F-150 Getting Bad Gas Mileage?
100 sources
2015 F-150
2015 Ford F-150 Check Engine Light? How to Fix Timing Chain Issues
100 sources
2015 F-150
Why Is My 2015 Ford F-150 Making a Clicking Noise?
100 sources
2015 F-150
Why is Your 2015 Ford F-150 Vibrating? Find Out How to Fix It
100 sources
2015 F-150
Why is Your 2015 F-150 Making a Rattling Noise?
100 sources
2010 Expedition
How to Fix a 2010 Ford Expedition Misfire
100 sources
2010 Expedition
2010 Ford Expedition Check Engine Light: Diagnosing Fuel System Issues
100 sources
2020 Ranger
Why Your 2020 Ford Ranger Cranks But Won't Start (And How to Fix It)
126 sources
2020 F-150
Why Your 2020 F-150 Shudders With the Check Engine Light On
100 sources
HONDA
2010 Accord
Fixing the 2010 Honda Accord Timing Chain Rattle and VTC Actuator Noise
80 sources
2020 Accord
2020 Honda Accord Spark Plug Fouling? Fix it with a MAF Sensor Clean
95 sources
2010 Accord
How to Diagnose and Fix the 2010 Honda Accord Timing Chain Rattle
100 sources
2020 Fit
How to Fix Your Honda Fit's Misfire, Rough Idle, and Hesitation
128 sources
2010 Accord
Fixing a Blown Head Gasket on Your 2010 Honda Accord
245 sources
2020 Fit
Why Your Honda Fit Is Misfiring (And How to Stop It for Good)
75 sources
2020 Fit
Why Your 2020 Honda Fit Is Misfiring (And How to Torque the Plugs Right)
97 sources
2020 Accord
How to Diagnose and Fix a Failing Ignition Coil in Your 2020 Accord
134 sources
2010 Accord
How to Replace Your 2010 Honda Accord Timing Belt (With Real Owner Data)
184 sources
CHEVROLET
2010 Spark
2010 Chevrolet Spark Hard Start? How to Diagnose & Fix an Intake Leak
100 sources
2010 Spark
Why Your 2010 Chevrolet Spark Stalls (And How to Fix It)
100 sources
2010 Spark
How to Fix Clicking Noise in Your 2010 Chevrolet Spark
100 sources
2010 Spark
2010 Chevrolet Spark Misfire? How to Diagnose and Fix an Intake Leak
100 sources