OBD Code P0302

PWDRHWND

MEMBER
2011 FORD FUSION
3.0L
6 CYL
4WD
AUTOMATIC
39,000 MILES

Car started idling rougher over past week or so. Check engine light came on today. Car still runs fine, no missing, bucking, hesitation while driving. No gas smell like sometimes with a bad injector.
Will fuel additive/cleaner possibly help or should I start by checking cylinder two plug?

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good evening

You have a misfire for cylinder number 2.

https://www.2carpros.com/articles/how-to-test-engine-compression

I would start by checking the compression to be sure the engine is not an issue.

Have you checked the basics such as plugs and coils?

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Roy

P0302
Descriptor
Cylinder 2 Misfire Detected
Probable Causes
Engine Mechanical Malfunction
Evaporative Emissions (EVAP) System Malfunction
Evaporative Emissions (EVAP) System Purge Valve
Exhaust Gas Recirculation (EGR) System
Fuel Injector Malfunction
Fuel Pressure Incorrect
Ignition System Malfunction
Misfire Monitor Neutral Profile Correction Has Not Been Relearned Since Last Repair
Vehicle Running Out of Fuel