What does this code mean?
P0300 indicates random or multiple-cylinder misfire. P0301–P0308 identify the numbered cylinder. Ignition, fuel delivery, compression, air leaks or mechanical timing can cause misfire. Use misfire counters, freeze-frame data and appropriate tests to narrow the cause. A flashing malfunction light can signal a misfire that may damage the catalyst.
Sources and interpretation [1]
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
10Original wording in English
FORD
Reported code forms P0308
Some 2024 Mustang Dark HorseTM vehicles equipped with a manual transmission may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0300, P0302 and P0308 stored in the…
FORD
Reported code forms P0308
Some 2024 Mustang Dark HorseTM vehicles equipped with a manual transmission may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0300, P0302 and P0308 stored in the…
FORD
Reported code forms P0308
Some 2021-2022 Mustang vehicles equipped with a 5.0L engine may exhibit an illuminated MIL with diagnostic trouble codes (DTCs) P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, and/or P0308 stored in the…
FORD
Reported code forms P0308
Some 2015-2017 Mustang vehicles equipped with a 5.0L engine may exhibit an illuminated MIL with diagnostic trouble code (DTC) P0300 through P0308 present. A noticeable misfire may or may not accompany these DTCs. If…
FORD
Reported code forms P0308
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…
FORD, LINCOLN, MERCURY
Reported code forms P0308
ENGINE MISFIRE WITH DIAGNOSTIC TROUBLE CODE (DTC) PEWEE, P0302, P0303, P0304, P0305, P0306, P0307, P0308, AND P0316. *TT
Check vehicle applicability
15A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | MUSTANG | 2024 |
| Ford | MUSTANG | 2022 |
| Ford | MUSTANG | 2021 |
| Ford | MUSTANG | 2017 |
| Ford | MUSTANG | 2016 |
| Ford | MUSTANG | 2015 |
| Ford | MUSTANG | 2014 |
| Ford | MUSTANG | 2013 |
| Ford | MUSTANG | 2012 |
| Ford | MUSTANG | 2011 |
| Ford | MUSTANG | 2004 |
| Ford | MUSTANG | 2003 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Sources and interpretation
These explanations are editorial summaries of the linked manufacturer material. PDF page numbers count from the first file page. Original publications are in English; translations are reference aids. A cited edition is not a claim that it is the manufacturer's latest instruction.
- 01 13 14 / 2033805 · Engine, Misfire Diagnostic Aid ↗
Volkswagen Group of America · PDF page(s) 1, 2 ·
- 2024–2025 MY OBD System Operation Summary for Gasoline Engines ↗
Ford Motor Company · PDF page(s) 9, 10 ·
Source check date · 2026-10-27
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.