MIL Illumination P0300 and/or Engine Runs Rough With Factory Fill Fuel
This bulletin involves filling the fuel tank with an additional 5 gallons of fuel, driving vehicle, then completing several start/stop cycles. The vehicles involved in this bulletin may contain factory fill fuel that exceeds allowable Driveability Index (DI) levels.
The MIL lamp may be illuminated and upon further investigation the Technician may find DTC P0300 - Multiple Cylinder Misfire has been set active or stored. The Technician may also notice the engine running rough on initial startup (with or without the MIL illuminated).
