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P 0302

Cylinder misfire

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What are the probable causes of DTC P0302?


code p 0302 refers to cylinder 2--misfire detected===causes --engine mechanical fault--wiring---ignition/fuel system---injector--ECT/MAF sensor---ECM
check the fuel pressure in the fuel manifold ( one reason for low power and missing)
check/ replace no 2 injector
check that the wiring for no 2 injector has no moisture in any harness connections

Feb 13, 2016 | Cars & Trucks

2 Answers

Has p0300 code misfire cyl 2 and 3


If it was just cylinder 2 or 3, the code would be 0302 or 0303. Instead, you have random misfires (probably) such that you should be checking things that affect the whole engine. Vacuum leaks, bad plug wires, bad coil(s) or ignition module are most likely, but even clogged exhaust, O2 sensors and bad battery can cause these problems. Yes, a battery can be good enough to start your car but still be bad enough to affect performance. If I had to guess, I would start by testing the ignition module. Most parts stores can test this if you remove it and carry it to them.

May 04, 2015 | 1998 Chevrolet Blazer

1 Answer

Code p 0302


Engine misfire. You'll need to isolate which cylinder is misfiring, then isolate each upstream component -- plugs, wires, injectors, etc.

Oct 26, 2014 | Cars & Trucks

1 Answer

Multiple cylinder misfires cause engine to die out unless gas pedal is pressed. Will not idle


the fuel smell is from unburnt fuel in the cylinders not firing , i'd have to start with reading the OBD codes to help narrow down the component/s at fault but at a guess i'd think the ign coils are at fault but the OBD will pinpoint the issue

Oct 08, 2014 | 2002 Dodge Durango

1 Answer

Misfire in cyclinder #2 code 0302


code p0302 refers to misfire detected cylinder 2===causes --engine mechanical fault--wiring---ignition/ fuel system---injector--ECT/MAF sensor---ECM
check the injector is working ok

Jan 07, 2014 | 2001 Volkswagen Beetle

1 Answer

I have a P0301 CODE


That code is "cylinder number 1 misfire". You can check for a bad spark plug by switching the number one spark plug with number two. If code 0302 comes up (misfire on 2), then the problem followed the bad No. 1spark plug over to cylinder 2. Replace the bad plug. If the code stayed the same, then it could be a bad spark plug cable. try switching the cable to another cylinder to again, see if the problem follows. A non-firing fuel injector will be silent. The others will make regular clicking noises that you can hear better if you place the tip of a screwdriver on the injector and put the end of the handle against your ear. (An automotive stethoscope works even better!) These are the first simple steps to take.

Jan 20, 2011 | 1995 Toyota Tacoma

2 Answers

Throwing P0301 and P0302 fault codes as of yesterday. Check engine light has been on and threw code of P1450 about 3-4 months ago. Figured it was an evap issue and no big deal thats why I never remedied...


those are misfire codes. Cylinder #1 & #2 in the firing order. Check for bad plugs first. Swap one of the misfires with a non misfire cylinder and see if that cylinder misfires. Or just change the 2 plugs. Put high temp anti seize on the threads if you ever want to remove them later.

Then change the 2 COPs (Coil on Plug).

Finally, check for plugged or bad injectors. CHevron Techron injector cleaner is the best. Add to 1/4 tank of gas for better cleaning.

Report results.

Please rate too. Thanks.

Dec 22, 2010 | 2001 Ford F150 Styleside SuperCrew

1 Answer

Engine light on, codes are PO300, PO302, PO305. what do these mean?


These are cylinder misfire codes meaning ;
P-0300 = RANDOM OR MULTIPLE MISFIRE
P-0302 =CYLINDER #2 MISFIRE
P-0305 =CYLINDER #5 MISFIRE
Check spark plugs, wires, and coil(s)

Mar 31, 2010 | 2006 Kia Sorento

2 Answers

My 2002 Nissan Altima 2.5 engine has a trouble code P 0302 engine misfire cylinder 2 misfire. Whay could possibly be the cause of this.


possible causes are: faulty spark plug, coil not firing or arcing, injector fouled. start with your spark plugs and if replacement is neccessary, replace with ngk or nd spark plugs.

Nov 08, 2009 | 2002 Nissan Altima

2 Answers

Codes p0300 and p0720


The P0300 is down to a cylinder misfire, usually it will have a number like 0302 where the 2 would mean the misfire is in number 2 cylinder. When were the plugs and wires last changed? what milage is on the vehicle?
P0720 is the output shaft speed sensor seems to be more of a common problem on the older hyundai's, is the gear change smooth or erratic? has it ever locked itself into gear? if you clear these codes how quickly do they come back?

Nov 27, 2008 | 2005 Hyundai Santa Fe

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