× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0301 Diagnostic Trouble Code Discussion for June 2019

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
2001 Jeep Grand Cherokee Laredo 4.0L Poor Idle Quality, Misfire VIN: 1J4GW48S21
P0301: Cylinder 1 Misfire Detected. Hey guys, HELP! This Jeep was originally brought in on a hook for a died while driving/no-start. I found that the CMP synchronizer had gone bad, chewing up the gear, effectively "jumping time" and destroying the camshaft. It started for me once, ju...
June 13, 2019
2003 Chevrolet Trailblazer North Face 4.2L Misfire VIN: 1GNDT13S43
P0301: Cylinder 1 Misfire Detected. this vehicle has constant missfires on #1 and #5. fuel pressure good, have spark and injector fire, good compression. spray tested intake gaskets...engine runs with no knock or smoke. Condition is always the same, whether idling or under load. Swapped inje...
June 26, 2019
1997 Toyota Tacoma DLX 3.4L MIL Lamp on VIN: 4TAVN52N8V
P0301: Cylinder 1 Misfire Detected. Truck runs fine cant feel a misfire , customer stated truck runs fine.When first started truck idles at 1350 rpm then as truck warms up and idle gets around 1050 rpm computer shows misfire on bank one, but no misfire is felt.Scoped crank and cam sensor bot...
June 28, 2019