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Po300 po304 - 2005 Chevrolet Impala

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P)300 ramdom missfire P0304 miss on number four cylinder. try replace number 4 plug

Posted on Oct 05, 2010

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2003 acura tl error codes po301 po302 po304 po306 p1399 po300


PO300 and P1399 are random cylinder misfire detected.
PO301 cylinder 1 misfire
PO302 cylinder 2 misfire
PO304 cylinder 4 misfire
PO306 cylinder 6 misfire
I would say that you have damage to the ignition wiring harness or you ECM is failing.

Feb 17, 2015 | Acura Cars & Trucks

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99 ACURA CL 3.0 FAILED PO302 MISFIRE PO303, PO304, PO305, PO306, & PO300 RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED


If a tune up (spark plugs, ignition wires, distributor cap/rotor button or coil packs) don't work, try checking the fuel system.

Nov 05, 2013 | Cars & Trucks

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Po300-po304


Replace the COP Ignition Coils

Google the codes to learn about them

Type: OBD PO304

Sep 16, 2013 | 2003 Lincoln Navigator

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2006 ford freestar po304


Code 300 is a random miss not serious enough to peg a cylinder, code 302 is for cylinder 2 and code 304 is cylinder 4. Code 402 is for an EGR flow problem.
Its possible the EGR problem is causing the missfires. The computer sets the 300 codes when RPM drops on a cylinder. The computer does not know why. So it could be spark, fuel, compression, or a vac leak.

Jun 28, 2013 | Cars & Trucks

1 Answer

2000 nissan frontier rough idle and has a po325,po300,po120,and po304


THROTTLE POSITION SENSOR, MISFIRE, #4 MISFIRE, KNOCK SENSOR, THESE ARE YOUR TROUBLE CODES, PO120,PO300, PO304, PO325, RESPECTIVELY, REPLACE THE TPS @ THROTTLE BODY, REPLACE KNOCK SENSOR , @ ENGINE BLOCK, REPLACE YOUR SPARK PLUGS & PLUG WIRES ! AND YOU MUST ALSO REPLACE BOTH YOUR AIR & FUEL FILTERS, DISTRIBUTOR CAP & ROTOR , INSPECT, MAY NEED TO REPLACE, I WOULD ANYWAY !!!!!!!! ADD SOME GOOD FUEL INJECTOR CLEANER TO TANK, NEXT FUEL UP !

Apr 02, 2013 | Nissan Frontier Cars & Trucks

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Bad coil pack, fouled plugs, bad sparkplug wires


there is a lot issue with this motor with the po300,po303 ,po304 . it has the do with the head and valves. you need to found out which cylinder is mis firing

Oct 29, 2012 | 2008 Hyundai Accent

1 Answer

Po300 po302 po304 p1399


The number 2 and number 4 cylinders are misfiring.I would do a tune-up on it sparkplugs, plug wires, air filter and fuel filter.

Oct 29, 2012 | 1998 Honda Civic

1 Answer

I have a few error codes for my 2004 dodge ram hemi 1500 4x4. they are po172, po300, and po304.


The p0172 is due to an O2 sensor in the exhaust seeing too much oxygen, the po300 is a missfire present and p0304 is cylinder #4 missfire, check plug and wire to #4 and repair, this should also take care of the p0172, if a cylinder is missing it is just pump air into the exhaust thus causing the code p0172.

Jan 13, 2012 | Cars & Trucks

1 Answer

My 2002 VW Passet is diagnosing a PO155, PO300, PO301,PO304 & PO305


The 300 codes are misfire codes, do a tune up and that should fix the problem. the 155 i will have to investigate and try to see what it is.

Apr 10, 2011 | 2002 Volkswagen Passat

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