P0303 FORD - Cylinder 3 Misfire Detected
P0303 FORD Possible Causes
- Faulty spark plug 3
- Clogged or faulty fuel injector 3
- Faulty ignition coil 3
- Fuel injector 3 harness is open or shorted
- Fuel injector 3 circuit poor electrical connection
- Ignition coil 3 harness is open or shorted
- Ignition coil 3 circuit poor electrical connection
- Insufficient cylinder 3 compression
- Incorrect fuel pressure
- Intake air leak
First diagnose P0303 FORD code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
P0303 FORD Tech NotesThe P0303 code means that the cylinder 3 is misfiring or is randomly misfiring. Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 3. If the problem persists more tests needs to be done to diagnose problem, see "Possible Causes"
Cost of diagnosing the P0303 FORD code
Labor: 1.0The cost of diagnosing the P0303 FORD code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the P0303 FORD code detected?Engine Cylinder 3 is Misfiring.
P0303 FORD Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/loss of power
- Hard start
- Engine hesitation
P0303 Ford DescriptionWhen a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.
P0303 FORD More InformationNeed more information on how to fix the P0303 FORD code?
Get Access to Factory Service Manuals
P0303 Ford Information for specific Ford models
- P0303 1997 FORD F150
- P0303 1998 FORD F150
- P0303 1999 FORD F150
- P0303 2000 FORD F150
- P0303 2001 FORD F150
- P0303 2002 FORD F150
- P0303 2003 FORD F150
- P0303 2006 FORD FUSION
- P0303 2007 FORD FUSION
- P0303 2008 FORD FUSION
- P0303 2009 FORD FUSION
- P0303 2010 FORD FUSION
- P0303 2011 FORD FUSION
- P0303 2012 FORD FUSION
Need more help?Get the P0303 Ford code diagnosed by a professional: Find a repair shop in your area
P0303 FORD CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P0303 Ford code? Have you replaced any parts?
Any information is appreciated. Thanks