P0308 — Cylinder 8 misfire detected

Code P0308 is a standard OBD-II diagnostic trouble code: Cylinder 8 misfire detected.

In our record, P0308 is reported most often on GMC, Ford and Dodge vehicles , against engine and electrical failure patterns , across 2005–2020 model years. GMC alone accounts for 67% of them.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P0308 across 6 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report P0308 6 patterns

2020 GMC Yukon XL

engine — Lifter Failure with Camshaft Damage

2019 GMC Sierra

engine — Lifter and Valve Train Failure

2019 GMC Sierra

electrical — Engine misfire, valve lifter failure, and camshaft wear

2018 GMC Sierra

engine — AFM Lifter Failure

2008 Ford Explorer

powertrain — Spark plug fracture and cylinder head seizure (3V engine)

2005 Dodge Ram 1500

cruise control — Sudden unintended wide-open throttle acceleration

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →