What does code P2308 mean?

Q: What does code P2308 mean?

Ignition Coil 'C' Secondary Circuit. P2308 indicates that the powertrain control module (PCM) has detected a fault in the secondary circuit of ignition coil 'C', which is the high-voltage side that fires the spark plug. The computer monitors the coil's secondary winding for expected electrical behavior and sets this code when the signal falls outside the normal range, often due to an open or shorted winding or a faulty connection.

DTC codes / P23xx · Ignition system and misfire / P2308

P2308Ignition Coil 'C' Secondary Circuit

P2308 indicates that the powertrain control module (PCM) has detected a fault in the secondary circuit of ignition coil 'C', which is the high-voltage side that fires the spark plug. The computer monitors the coil's secondary winding for expected electrical behavior and sets this code when the signal falls outside the normal range, often due to an open or shorted winding or a faulty connection.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

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.