× 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

P0300 Diagnostic Trouble Code Discussion for December 2021

Multiple 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 P0300
Help Request Posted
2008 Pontiac Solstice GXP 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G2MG35X78
Car is flashing misfire from the time you crank it up. All four cylinders are misfiring the same amount.I have replaced everything including fuel injectors, high pressure pump,intake gasket,cam sensors,crank sensor,cam actuators intake and exhaust,spark pl...
December 14, 2021
2004 Saab 9-3 Arc 2.0L Excessive Emissions, Misfire, Poor Fuel Economy VIN: YS3FD79Y54
P0300: multiple missfires. fuel trim max out minus 25% swapped air mass meter-no change.swap map sensor-no change.swap boost pressure sensor-no change.scan data is good for sensors except atmospheric pressure reads38.3 always-should read about 99 as other pressure sensors do before ...
December 14, 2021
2008 Pontiac Solstice 2.4L Hesitation, Cuts out, Stall VIN: 1G2MC35BX8
P0300: misfire. Car towed in, engine cranks, starts and stalls. No codes initially. Fuel PSI good, has RPM reading and all pids look to be reading correct. I can hold gas pedal down for flood clear for 30 seconds then release and usually get to stay running if RPM is kept...
December 22, 2021
2009 Honda Fit 1.5L Excessive Emissions, Poor Idle Quality, Misfire VIN: JHMGE87209
P0300: random misfire. Towed in customer sates car has been to another shop and is not fixed. Car runs rough, has no power and check engine light flashing. Has new B1 and B2 sensors, new MAF sensor and new air filter. Customer cant recall ever doing a valve adjustment. P0301-4, ...
December 23, 2021
2013 Jeep Wrangler Unlimited Sahara 3.6L Misfire, MIL Lamp on VIN: 1C4HJWEG8D
P0300: Random Cylinder Misfire. Happy New Year to all of you lucky enough not to be working on this Jeep. I am trying to understand the way this system operates and what my next step should be. I have replaced these oil pressure sending units before but don't want to dive right in if ...
December 30, 2021