P0308

Showing the 60 model years where P0308 appears most; it is on file for 269 in total.

A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.

Owners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.

Service bulletins and campaigns whose filed summary names P0308. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.

• TSB 26-2011
  2026-01-22 · Power Train
• Some of the vehicles listed in the Model statement above may exhibit an illuminated malfunction indicator lamp (MIL) with diagnostic trouble codes (DTCs) P0300, P0316, and/or P0301 through P0308. This may be due to the software in the powertrain control module (PCM).
• SSM 53215
  2024-12-10 · Unknown Or Other
• Some 2024 Mustang Dark Horseâ„¢ 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 powertrain control module (PCM) from extended high speed or racetrack operation (driving the vehicle and allowing the engine to hit maximum engine speed, several times and in a short period
• SSM 52926
  2024-09-20 · Unknown Or Other
• Some 2024 Mustang Dark Horseâ„¢ 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 powertrain control module (PCM) from extended high speed or racetrack operation (driving the vehicle and allowing the engine to hit maximum engine speed, several times and in a short period
• PIP5628F
  2023-04-24 · Engine And Engine Cooling — Engine — Engine Control Module (Ecu/Ecm)
• This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D
• 23-NA-043
  2023-04-19 · Engine And Engine Cooling
• This service bulletin provides a procedure to replace the valve lifter and guides to correct customer concerns of Poor Engine Performance, Engine Misfires, Malfunction Indicator Lamp (MIL) Illuminated - DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 Set.
• PIP5628E
  2023-02-10 · Equipment — Electrical — Accessory Generator — Outlets/Receptacle
• This Preliminary information communicates information that will need to be provided to TAC to aid in diagnosing if a vehicle comes in with misfire and DTC Codes P0300 - P0308 and/or P050D

A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.