P0308 Fault Code

Cylinder 8 Misfire Detected

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0308 code indicates that there is a misfire detected in cylinder number 8 of the engine. This means that the 8th cylinder is not operating efficiently or may not be firing at all, leading to a decrease in engine performance and increased emissions.

What are the symptoms of the P0308 code?

• Decreased engine performance and power
• Rough idling or engine vibration
• Check Engine Light illuminated
• Increased fuel consumption
• Possible excessive exhaust emissions

What causes the P0308 code?

• Faulty spark plug or ignition coil related to cylinder 8
• Clogged fuel injector affecting fuel delivery to cylinder 8
• Vacuum leak in the intake manifold near cylinder 8
• Compression issues such as worn piston rings or a blown head gasket
• Faulty engine control unit (ECU) causing incorrect fuel or ignition timing

How to fix P0308?

• Inspect and replace the spark plug and ignition coil for cylinder 8 if faulty
• Clean or replace the fuel injector as necessary
• Check for and repair any vacuum leaks
• Perform a compression test to evaluate cylinder health
• Reprogram or replace the ECU if it’s determined to be malfunctioning