P0308 Code: Complete DIY Repair Guide
The P0308 trouble code indicates a misfire detected in cylinder 8 of a vehicle’s engine. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors the performance of the engine and its components. When the Powertrain Control Module (PCM) detects that cylinder 8 is not firing correctly, it triggers the P0308 code.