Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
DODGE, JEEP
Reported code forms P0300
Flash: MIL Illumination P0300- Multiple Cylinder Misfire and/or P0573- Brake Switch 1 Stuck Off This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small…
CHRYSLER, DODGE, JEEP
Reported code forms P0300
IDLE FLUCTUATION AND OR MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION DIAGNOSTIC TROUBLE CODES P0300, P0301, P0302, P0303 OR P0304. *TT