BUICK, CHEVROLET, OLDSMOBILE, PONTIAC
Reported code forms P0300
CROSS INJECTOR WIRES CAUSING MISFIRE AT STEADY STATE SPEED AND RPM, MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATED, AND A P0300 SET. SIT BULLETIN 1460291. *TT
HomeP0300 · Manufacturer communications
P0300 · Manufacturer communications
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
CHEVROLET, OLDSMOBILE, PONTIAC
Reported code forms P0300
ENGINE MISFIRE POSSIBLE DIAGNOSTIC TROUBLE CODES (DTCS) P0300 - P0304. *TT
CHEVROLET, OLDSMOBILE, PONTIAC
Reported code forms P0300
SOME CUSTOMES MAY COMMENT ON A ROUGH ENGINE IDLE AND / OR MISFIRE. THE CHECK ENGINE LIGHT MAY OR MAY NOT BE ILLUMINATED AND DIAGNOSTIC TROUBLE CODE P0300 MAY OR MAY NOT BE SET UNDER ROUGHT IDLE CONDITIONS. *TT
BUICK, CHEVROLET, OLDSMOBILE, PONTIAC
Reported code forms P0300
EXHIBITING DIAGNOSTIC TROUBLE CODES P0300, P0301, P0302, P0303, AND P0304 INDICATING ENGINE MISFIRE CONDITIONS. *YC