Join Now
International Automotive Technicians Network

P0301 Diagnostic Trouble Code Discussion for August 2005

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
2002 Subaru Impreza WRX 2.0L Misfire, MIL Lamp on VIN: JF1GD29622
P0301: Cylinder 1 Misfire Detected. greetings. this one came in for check engine light. scanned, retrieved listed codes. checked data stream - front O2 sensor reading 3.67 to 3.89 volts. this reading does not change when sensor is unplugged from vehicle harness. very occassionaly, scanner will r...
August 03, 2005
2000 Audi A4 Quattro 1.8L Hesitation, Misfire, MIL Lamp on VIN: WAUDC28D9Y
P0301: Cylinder 1 Misfire. Dear Fellow Tech, This vehicle is a stumper. Idle is smooth, all cylinders fire good, it runs fine at times but when it acts up it does not have any power, backfires, sets MIL light and when held at 2000 rpm's, the rpm's drop no matter how much gas you give it...
August 05, 2005
2002 Subaru Impreza WRX 2.0L Misfire, MIL Lamp on VIN: JF1GD29622
P0301: Cylinder 1 Misfire Detected. greetings. this one came in for check engine light. scanned, retrieved listed codes. checked data stream - front O2 sensor reading 3.67 to 3.89 volts. this reading does not change when sensor is unplugged from vehicle harness. very occassionaly, scanner will r...
August 05, 2005
1998 Subaru Legacy 2.5L MIL Lamp on VIN: 4S3BG856W6
P0301: Cylinder 1 Misfire Detected. ... intermittently setting misfire code{s} for a couple of months. It is almost always P0301, but it has set a P0303 and a P0304 at least once each. All ignition components have been replaced with O.E. Subaru parts - Plugs, Wires and Coil. After trying everyth...
August 08, 2005
1997 Porsche 911 Carrera 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: WPOCA2994V
P0301: cylinder 1 misfire. car has a rough idle and sets misfire codes. drives ok does not have a misfire driving. Checked ignition on scope ok checked each dist seperately both are ok. dist. belt is ok. fuel pressure and volume are within spec perfomed a cylinder balance test all cyind...
August 10, 2005
2004 Chrysler Town & Country (Van) 3.3L Misfire VIN: 1C4GP45R74
P0301: cylinder 1 misfirecompress. Complaint misfire only when hot.suspect injector but fuel is 8%+
August 16, 2005
1996 Jeep Grand Cherokee Laredo 4.0L Misfire VIN: 1J4GZ58S3T
P0301: Cylinder 1 Misfire Detected. Major tune-up done, decarbonized engine twice, and added techron, and clean injectors with 3 m cleaner. This vehicle runs perfect on road under any conditon with the exception of climing a steep mountain under load. It will start to missfire immediately, check...
August 22, 2005
2000 Volkswagen Passat GLS 2.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWTH23BOY
P0301: Cylinder 1 misfire detected. Vehicle has misfire codes for cylinder 1, 4 and random. The misfire is intermittent. When under a load, either accelerating quickly or going up a hill, is when you notice a dead misfire. Having the AC on makes this problem much worse. Current ramped and it see...
August 23, 2005
2002 Subaru Impreza WRX 2.0L Misfire, MIL Lamp on VIN: JF1GD29622
P0301: Cylinder 1 Misfire Detected. greetings. this one came in for check engine light. scanned, retrieved listed codes. checked data stream - front O2 sensor reading 3.67 to 3.89 volts. this reading does not change when sensor is unplugged from vehicle harness. very occassionaly, scanner will r...
August 03, 2005
2000 Audi A4 Quattro 1.8L Hesitation, Misfire, MIL Lamp on VIN: WAUDC28D9Y
P0301: Cylinder 1 Misfire. Dear Fellow Tech, This vehicle is a stumper. Idle is smooth, all cylinders fire good, it runs fine at times but when it acts up it does not have any power, backfires, sets MIL light and when held at 2000 rpm's, the rpm's drop no matter how much gas you give it...
August 05, 2005
2002 Subaru Impreza WRX 2.0L Misfire, MIL Lamp on VIN: JF1GD29622
P0301: Cylinder 1 Misfire Detected. greetings. this one came in for check engine light. scanned, retrieved listed codes. checked data stream - front O2 sensor reading 3.67 to 3.89 volts. this reading does not change when sensor is unplugged from vehicle harness. very occassionaly, scanner will r...
August 05, 2005
1998 Subaru Legacy 2.5L MIL Lamp on VIN: 4S3BG856W6
P0301: Cylinder 1 Misfire Detected. ... intermittently setting misfire code{s} for a couple of months. It is almost always P0301, but it has set a P0303 and a P0304 at least once each. All ignition components have been replaced with O.E. Subaru parts - Plugs, Wires and Coil. After trying everyth...
August 08, 2005
1997 Porsche 911 Carrera 3.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: WPOCA2994V
P0301: cylinder 1 misfire. car has a rough idle and sets misfire codes. drives ok does not have a misfire driving. Checked ignition on scope ok checked each dist seperately both are ok. dist. belt is ok. fuel pressure and volume are within spec perfomed a cylinder balance test all cyind...
August 10, 2005
2004 Chrysler Town & Country (Van) 3.3L Misfire VIN: 1C4GP45R74
P0301: cylinder 1 misfirecompress. Complaint misfire only when hot.suspect injector but fuel is 8%+
August 16, 2005
1996 Jeep Grand Cherokee Laredo 4.0L Misfire VIN: 1J4GZ58S3T
P0301: Cylinder 1 Misfire Detected. Major tune-up done, decarbonized engine twice, and added techron, and clean injectors with 3 m cleaner. This vehicle runs perfect on road under any conditon with the exception of climing a steep mountain under load. It will start to missfire immediately, check...
August 22, 2005
2000 Volkswagen Passat GLS 2.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWTH23BOY
P0301: Cylinder 1 misfire detected. Vehicle has misfire codes for cylinder 1, 4 and random. The misfire is intermittent. When under a load, either accelerating quickly or going up a hill, is when you notice a dead misfire. Having the AC on makes this problem much worse. Current ramped and it see...
August 23, 2005