P0303 2006 NISSAN ALTIMA SEDAN - Number 3 Cylinder Misfire Detected
P0303 2006 NISSAN ALTIMA SEDAN 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 2006 NISSAN ALTIMA SEDAN 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 2006 NISSAN ALTIMA SEDAN 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 2006 NISSAN ALTIMA SEDAN code
Labor: 1.0The cost of diagnosing the P0303 2006 NISSAN ALTIMA SEDAN code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
When is the P0303 2006 NISSAN ALTIMA SEDAN code detected?Engine Cylinder 3 is Misfiring.
P0303 2006 NISSAN ALTIMA SEDAN Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/loss of power
- Hard start
- Engine hesitation
P0303 2006 NISSAN ALTIMA SEDAN MeaningWhen 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 2006 NISSAN ALTIMA SEDAN More InformationNeed more information on how to fix the P0303 2006 NISSAN ALTIMA SEDAN code?
Get Access to Factory Service Manuals