What does code P0306 mean?

Q: What does code P0306 mean?

Cylinder 6 Misfire Detected. P0306 means the engine computer has detected a misfire on cylinder 6, which is a failure of that cylinder to burn its air-fuel mixture properly during the power stroke. The computer watches crankshaft speed fluctuations and flags this code when the misfire rate exceeds a calibrated threshold that could damage the catalytic converter.

DTC codes / P03xx · Ignition system and misfire / P0306

P0306Cylinder 6 Misfire Detected

P0306 means the engine computer has detected a misfire on cylinder 6, which is a failure of that cylinder to burn its air-fuel mixture properly during the power stroke. The computer watches crankshaft speed fluctuations and flags this code when the misfire rate exceeds a calibrated threshold that could damage the catalytic converter.

SystemPowertrain

Code typeGeneric (all makes)

SeverityHigh

Fix difficultyIntermediate

AreaIgnition system and misfire

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.