Join Now
International Automotive Technicians Network

P0301 Diagnostic Trouble Code Discussion for April 2011

Cylinder 1 Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0301
Help Request Posted
1998 Porsche Boxster 2.5L Misfire VIN: WP0CA2983W
P0301: Cylinder 1 misfire. Vehicle has a misfire cylinder #1 swapped ignition coil and spark plug problem still at #1.Checked fuel pressures good. Checked injector is getting power and pressure drops when we activate #1 injector.Performed compression test 135 lbs across the board.Alldat...
April 01, 2011
2005 Ford Expedition XLS 5.4L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1FMFU16525
P0301: cyl 1 misfire. swapped coils plugs and injectors to another cylinder check compression 155 psi swap out coils with new check valave timing sensor clean mass airflow check all wiring to coils pcm and injectors
April 02, 2011
2004 Nissan Quest S 3.5L Misfire VIN: 5N1BV28U54
P0301: Cylinder 1 Misfire Detected. ... slight aceleration keeps setting p0301 any ideas.
April 02, 2011
1998 Porsche Boxster 2.5L Misfire VIN: WP0CA2983W
P0301: Cylinder 1 misfire. Vehicle has a misfire cylinder #1 swapped ignition coil and spark plug problem still at #1.Checked fuel pressures good. Checked injector is getting power and pressure drops when we activate #1 injector.Performed compression test 135 lbs across the board.Alldat...
April 06, 2011
2003 Volkswagen Passat GLS 1.8L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWPD63B63
P0301: misfire 1 cyl. Car came in misfiring and barely running at idle. Car runs just great soon as you drive it or even if u bring revs off idle. Replaced plugs and then checked later and were fouled after not much running time at idle. LTFT 10% STFT 25% after a short 10 min drive...
April 07, 2011
1996 Chevrolet Cavalier LS 2.4L Poor Idle Quality, Misfire VIN: 1G1JF52T6T
P0301: Cylinder 1 Misfire Detected. We are struggling with this cavalier. As you can see by the above repair history this car has had all the things replaced that usually cause this problem. I am at a loss to figure it out. We even flashed the computer on the outside chance it would help. I know...
April 11, 2011
2001 Ford F-250 Super Duty XLT 5.4L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTNX21L01
P0301: Fault Cylinder 1 Misfire Detected. This vehicle was brought in running extremely bad.I found cyl.3 plug loose and the ground electrode burnt off,cyl.1 looks good except the ceramic on the firing electrode is rust red as are all the other plugs that I have so far removed.I've got a feeling there...
April 11, 2011
2001 Ford F-250 Super Duty XLT 5.4L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTNX21L01
P0301: Fault Cylinder 1 Misfire Detected. This vehicle was brought in running extremely bad.I found cyl.3 plug loose and the ground electrode burnt off,cyl.1 looks good except the ceramic on the firing electrode is rust red as are all the other plugs that I have so far removed.I've got a feeling there...
April 12, 2011
2001 Land Rover Discovery Series II SE 4.0L Poor Idle Quality, Hesitation, Misfire VIN: SALTW15401
P0301: misfire cyl 1. ... CRAZY!! I have this 01 discovery II in the shop, it originally came in for a misfire. No CEL on, but when i check for codes with modis, found 13 DTC's stored in PCM. Did bulb check, and found the used car dealer this guy bought the car from removed the CEL...
April 13, 2011
2003 Ford F-150 XL 4.6L Misfire, MIL Lamp on VIN: 2FTRX18W23
P0301: missfire cylinder 1. Got a good one here guys. 03 f150 with 4.6 keeps burning up #1 cylinder coils. Customer had towed in after replacing the coil originally with a o'rielys coil, which it burned out right away. We looked at it, confirmed pulse with noid light, seemed pretty strai...
April 14, 2011
2003 Honda Pilot EX 3.5L MIL Lamp on VIN: 2HKYF18533
P0301: Cylinder 1 Misfire Detected. ... However, I have repeatedly cleared the codes and immediately performed Honda's procedure for CKP Pattern Learn, with no results. I want to check misfire data in Mode 6 for this truck. Does anyone have a copy of this data for Hondas? Can someone point me to...
April 19, 2011
2008 Dodge Charger R/T 5.7L Cuts out, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 2B3KA53H88
P0301: 1 cyl. Hi guys please help this car is driving us crazy.first we replace oil w/ correct oil drove for 1 day then replaced again. Since then every time i drive car it gets differant codes.all data looks good while driving car but int. Stalls at stop signs.ck all wirin...
April 20, 2011
2006 Mercedes-Benz C230 Sport 2.5L Poor Idle Quality, Hesitation, Surge, Misfire VIN: WDBRF52H16
P0301: Cylinder 1 Misfire. Hey guys. I need some help with this one. This car came in with a check engine light with the codes listed. I've checked the misfire data and saw #1 and couple of other cylinders missing only @ idle. Given the failure rates of the MAFs, I started by checking t...
April 22, 2011
2001 Mazda Tribute ES 3.0L Misfire
P0301: Cylinder 1 Misfire Detected. misfire in idle, catalyst monitor and evap monitar never complete. To pass emissions all but one monitors needed to be completed. Reset the computer by grounding battery. Bank 1 runs rich and Long fuel trim stays from -2o% to -25%
April 28, 2011
2003 Honda Accord LX 2.4L Misfire, MIL Lamp on VIN: 3HGCM56303
P0301: Cylinder 1 Misfire Detected. Dead miss on #1. Replaced plug, no change. Coil fires to ground. Swapped #1, #2 coils, miss did not follow coil. Compression 175 on #1 and #2. Observed piston movement #1. Noid light flashes for #1. Removed fuel rail and cranked engine, all injectors spray equ...
April 29, 2011