Possible causes

– Faulty spark plug 2
– Clogged or faulty fuel injector 2
– Faulty ignition coil 2
– Fuel injector 2 harness is open or shorted
– Fuel injector 2 circuit poor electrical connection
– Ignition coil 2 harness is open or shorted
– Ignition coil 2 circuit poor electrical connection
– Insufficient cylinder 2 compression
– Incorrect fuel pressure
– Intake air leak

Tech notes

The P0302 code means that the cylinder 2 is misfiring or is randomly misfiring. Start by checking for intake leaks an if no leaks are found the next step is to replace the spark plugs on cylinder 2. If the problem persist more tests needs to be done to diagnose problem, see “Possible Causes”

When is the code detected?

Engine Cylinder 2 is Misfiring.

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)
– Lack/loss of power
– Hard start
– Engine hesitation

P0302 Description

When 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.

P0302 Information for specific makes

P0302 BMW
P0302 CHRYSLER
P0302 JEEP
P0302 DODGE
P0302 HONDA
P0302 ACURA
P0302 HYUNDAI
P0302 INFINITI
P0302 ISUZU
P0302 KIA
P0302 LEXUS
P0302 TOYOTA
P0302 SCION
P0302 MAZDA
P0302 MITSUBISHI
P0302 NISSAN
P0302 SUBARU
P0302 VOLKSWAGEN
P0302 AUDI
P0302 GMC
P0302 CHEVROLET
P0302 PONTIAC
P0302 FORD
P0302 CADILLAC
P0302 BUICK
P0302 SATURN
P0302 MERCURY
P0302 VOLVO
P0302 HUMMER
P0302 JAGUAR