What does code P0327 mean?

Q: What does code P0327 mean?

Knock Sensor 1 Circuit Low Input (Bank 1). P0327 indicates that the engine control module (ECM) has detected a low voltage signal on the knock sensor circuit for bank 1, which is the side of the engine containing cylinder number one. The knock sensor is a piezoelectric device that generates a small voltage when it detects engine vibration, and the ECM uses this signal to adjust ignition timing and prevent damaging detonation.

DTC codes / P03xx · Ignition system and misfire / P0327

P0327Knock Sensor 1 Circuit Low Input (Bank 1)

P0327 indicates that the engine control module (ECM) has detected a low voltage signal on the knock sensor circuit for bank 1, which is the side of the engine containing cylinder number one. The knock sensor is a piezoelectric device that generates a small voltage when it detects engine vibration, and the ECM uses this signal to adjust ignition timing and prevent damaging detonation.

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.