Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
FORD
Reported code forms P0300
Some of the vehicles listed in the Model statement above may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0300 and/or P0316 stored in the powertrain control module (PCM)…
FORD, LINCOLN
Reported code forms P0300
Some 2025-2026 Explorer/Aviator/Police Interceptor Utility non-hybrid vehicles built on 06-Feb-2025 and through 13-Dec-2025 may exhibit various drivability symptoms including a rough idle or hesitation shortly after…
FORD, MERCURY
Reported code forms P0300
MIL ON AND/ OR RUNS ROUGH/MISFIRE DTCS P0300-P0308 P0316 AND OR P0171/P0174 4.6L ENGINE. *EH
FORD, MERCURY
Reported code forms P0300
RUNS ROUGH OR MISFIRE - DIAGNOSTIC TROUBLE CODES P0300-P0308 OR P0316. *TT
FORD, MERCURY
Reported code forms P0300
SOME VEHICLES EQUIPPED WITH THE 4.0L SOHC ENGINE MAY EXHIBIT A CHECK ENGINE LIGHT ON WITH DIAGNOSTIC TROUBLE CODES P0300 (RANDOM MISFIRE) OR P0301. *TT
FORD, MERCURY
Reported code forms P0300
INFORMATION REGARDING MALFUNCTION INDICATOR LIGHT ILLUMINATING WITH DIAGNOSTIC TROUBLE CODE P0300/P0301.*YH
FORD, MERCURY
Reported code forms P0300
MALFUNCTION INDICATOR LAMP (MIL) - DIAGNOSTIC TROUBLE CODES (DTCS) P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, AND/OR P0308 STORED IN MEMORY. *TW
FORD, LINCOLN, MERCURY
Reported code forms P0300
MALFUNCTION INDICATOR LAMP (MIL) - DIAGNOSTIC TROUBLE CODES (DTCS) P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307 AND/OR P0308 STORED IN MEMORY. *TW
FORD, LINCOLN, MERCURY
Reported code forms P0300
CONCERNS OF CHECK ENGINE LIGHT (MIL) W/CODES P0300 THRU P0308 & ENGINE RUNS ROUGH/MISSES MAY BE DUE TO A SPARK PLUG WIRE BOOT THAT IS NOT FULLY SEATED ON THE SPARK PLUG. *TT