What does code P2347 mean?

Q: What does code P2347 mean?

Cylinder #12 Above Knock Threshold. P2347 indicates that the engine control module has detected an abnormal knock signal specifically from cylinder number 12, exceeding the calibrated threshold for that cylinder. The computer uses a block-mounted knock sensor and crankshaft position data to isolate the noise to that cylinder, then retards timing or reduces boost to protect the engine.

DTC codes / P23xx · Ignition system and misfire / P2347

P2347Cylinder #12 Above Knock Threshold

P2347 indicates that the engine control module has detected an abnormal knock signal specifically from cylinder number 12, exceeding the calibrated threshold for that cylinder. The computer uses a block-mounted knock sensor and crankshaft position data to isolate the noise to that cylinder, then retards timing or reduces boost to protect the engine.

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.