P0300 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

OBD-II Trouble Shooting Got a code reader? Find out what your GM car's Check Engine light is trying to tell you (and then turn Check Engine light off).

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Old 09-23-2009, 11:20 PM   #1
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Default P0300


Random misfire
This is a random misfire and not connected to any one cylinder

Symptoms may include:
  • Engine may be harder to start
  • Engine may stumble and or hesitate
A code P0300 may mean that one or more of the following has happened:
  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor
  • Faulty fuel injector
  • Faulty ICM
  • Burned exhaust valve
  • Faulty catalytic converter
  • Running out of fuel
  • Poor compression
  • Faulty MAF
  • Defective computer
Possible Solutions
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DTC P0300 Engine Misfire Detected Wargamer 1992-1999 26 05-01-2005 02:57 PM

obd2, obdii, p0300, p300

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