Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
DODGE, RAM
Reported code forms P0300
Flash: Malfunction Indicator Lamp (MIL) Illumination. Includes Various Driveability Improvements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A…
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…
CADILLAC, CHEVROLET
Reported code forms P0300
GM: THE ENGINE MAY RUN ROUGH WITH THE CHECK ENGINE LIGHT ON/LOW COMPRESSION ON CYLINDER MISFIRE. STORED DTC P0300. THIS MAY BE DUE TO A PISTON IN THE CYLINDER CRACKED BETWEEN THE PISTON COMPRESSION RINGS. *JS
BUICK, CADILLAC, CHEVROLET, GMC
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that are setting Diagnostic Trouble Code P0300 after engine repairs. Technician will need to ensure that injector…
CADILLAC, CHEVROLET
Reported code forms P0300
Malfunction Indicator Lamp Flashes Due to Engine Misfire On Acceleration, DTC P0300 and/or P0303 Set Condition/Concern Some customers may comment that the Malfunction Indicator Lamp flashes when accelerating from a stop…
CHEVROLET
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have a Diagnostic Trouble Code P0300. Technician may find Diagnostic Trouble Codes P0011 and or P0014 set in the…
CADILLAC, CHEVROLET, GMC
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on a rough running engine, and/or oil consumption. Technician…
CHEVROLET, GMC
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician may find Diagnostic Trouble Codes P0300 to…
BUICK, CADILLAC, CHEVROLET, GMC
Reported code forms P0300
This Preliminary Information communication provides information to the technician with information regarding high misfire rates always on #1 cylinder. A customer may complain of misfires or roughness on cold start up…
AUDI
Reported code forms P0300
Supersedes Technical Service Bulletin Group 01 number 13-12 dated July 2, 2013. MIL on. DTC P1923 (Check DTC memory of Engine Control Module (ECM) 2) is stored in the engine control module J623 (address word 01). DTCs…
CADILLAC, CHEVROLET, GMC
Reported code forms P0300
This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that have check engine light and a misfire. Technician will find a P0300 set. If the…
INFINITI
Reported code forms P0300
IF YOU CONFIRM The MIL is "ON" with any misfire DTC stored (P0300, P0301, P0302, P0303, P0304, P0305, or P0306), and there are no drivability issues. ACTION 1. Refer to step 6 in the SERVICE PROCEDURE to confirm this…
AUDI
Reported code forms P0300
Supersedes Technical Service Bulletin Group 01 number 13-73 dated March 7, 2013. The engine warning light is on after engine replacement. The engine is not running roughly. However, the engine control module, J623 (01),…
LEXUS
Reported code forms P0300
Some IS250 and GS300 vehicles may exhibit one or more of the following conditions: MIL ?ON? DTC P0300, P0301, P0302, P0303, P0304, P0305, and/or P0306 Intermittently runs rough after coming to a stop with the engine at…
KIA
Reported code forms P0300
TSB: SERVICE ACTION: ECM UPGRADE - MIL ON WITH DTC P0300 AND/OR P0301, P0302, P0303 AND P0304 (SA151) - This bulletin provides information related to the ECM software upgrade for some 2011-2012MY Optima (TF), produced…
CHEVROLET, GMC
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have a lifter noise and or Service Engine Soon Malfunction Indicator Lamp on. Technician may find a Diagnostic…
BUICK
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have an engine that runs rough, engine misfire or Service Engine Soon Light illuminated or flashing. Technician will…
CHEVROLET, GMC
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have a lifter noise and or Service Engine Soon Malfunction Indicator Lamp on. Technician may find a Diagnostic…
CHEVROLET, GMC
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have a lifter noise or Service Engine Soon light on. Technician will find Diagnostic Trouble Code P0300. Technician…
BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, PONTIAC, SAAB
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on, engine misfire, and/or engine noise. Technician may find…
CADILLAC, CHEVROLET, GMC
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have an engine misfire, oil consumption, and/or a Service Engine Soon Malfunction Indicator Lamp on. Technician may…
LEXUS
Reported code forms P0300
Some IS250 and GS300 vehicles may exhibit one or more of the following conditions: MIL "ON" DTC P0300, P0301, P0302, P0303, P0304, P0305, and or P0306. Intermittently runs rough after coming to a stop with the engine at…
AUDI
Reported code forms P0300
MIL on. DTCs for random cylinder misfires (DTC P0300 - DTC P0310) are stored in the engine control modules (ECM), J623 (address word 01) and J624 (address word 11). This condition will not cause stalling or drivability…
AUDI
Reported code forms P0300
Supersedes Technical Service Bulletin Group 24 number 12-37 dated August 20, 2012. MIL on. DTC P1923 (Check DTC memory of Engine Control Module (ECM) 2) is stored in the engine control module J623 (address word 01). One…
AUDI
Reported code forms P0300
Supersedes Technical Service Bulletin Group 00 number 10-01 dated February 5, 2010. Excessive accumulation of deposits on intake valves, intake manifold, fuel injectors and combustion chambers. Engine runs rough after…
FORD
Reported code forms P0300
FORD: NO OTHER DTCS OR DRIVABILITY SYMPTOMS PRESENT, ON SOME VEHICLES, WHEN MIL IS ILLUMINATED WITH COMBINATION OF ANY DIAGNOSTIC TROUBLE CODES (DTCS) P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 AND/OR…
AUDI
Reported code forms P0300
MIL on, cold start misfire (DTCs P0300 - P0310)
BUICK, CADILLAC, CHEVROLET, GMC, SATURN
Reported code forms P0300
This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Codes P0300, P0301,…
MITSUBISHI
Reported code forms P0300
This TSB provides a field fix procedure to address false MIL illumination with DTC P0300 (Random/multiple cylinder misfire detected) stored in the ECM under the following conditions: 1. During cold engine start, rough…
AUDI
Reported code forms P0300
The engine warning light is on after engine replacement. The engine is not running roughly. However, the engine control module, J623 (01), is storing one or more of the following engine misfire fault codes: DTCs P0300 -…