What does code P2311 mean?

Q: What does code P2311 mean?

Ignition Coil 'D' Secondary Circuit. P2311 indicates that the powertrain control module (PCM) has detected an abnormal condition in the secondary circuit of ignition coil 'D', which is the high-voltage side that fires the spark plug. The PCM monitors the coil's secondary circuit for expected electrical behavior and sets this code when the feedback signal falls outside the normal range, often due to an open, short, or excessive resistance in the coil or its wiring.

DTC codes / P23xx · Ignition system and misfire / P2311

P2311Ignition Coil 'D' Secondary Circuit

P2311 indicates that the powertrain control module (PCM) has detected an abnormal condition in the secondary circuit of ignition coil 'D', which is the high-voltage side that fires the spark plug. The PCM monitors the coil's secondary circuit for expected electrical behavior and sets this code when the feedback signal falls outside the normal range, often due to an open, short, or excessive resistance in the coil or its wiring.

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.