P0328

DTC P0328
Knock sensor fault bank 1 Drive cycle B:Signal out of range - above maximum.

Possible causes by suggested order of priority:
- Connectors C627, ECM C636 (B).
- Open circuit - C627/1 (KW) to C636/49 (KW).
- Open circuit - C627/2 (B) to C636/48 (-).
- Short circuit - C627/1 (KW) to vehicle earth.
- Knock sensor fixing torque incorrect.
- Knock sensor seating face contaminated.
- Knock sensor faulty.

Connectors C627, ECM C636 (B).
- Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

Open circuit - C627/1 (KW) to C636/49 (KW).
- Check resistance > 1M Ohm

Open circuit - C627/2 (B) to C636/48 (-).
- Check resistance > 1M Ohm

Short circuit - C627/1 (KW) to vehicle earth.
- Check resistance < 5.0 Ohm

Knock sensor fixing torque incorrect.
CHECK THE FOLLOWING:
- Check the torque of the knock sensor fixing is as specified in the workshop manual. The sensor fixing MUST be set with a torque wrench. Too high or too low fixing torque will adversely affect the sensor performance. Knock Sensor
POSSIBLE FAULTS
- Knock sensor fixing torque set incorrectly.

Knock sensor seating face contaminated.
CHECK THE FOLLOWING:
- Remove the knock sensor from the engine and check that the mating face and the screw threads are clean and undamaged.
- Dirt or damage will effect the efficiency of signal transfer from the engine to the sensor.
POSSIBLE FAULTS
- Knock sensor fixing contaminated or damaged.

Knock sensor faulty.
CHECK THE FOLLOWING:
- Substitute knock sensor for a known good unit.

NOTE: It is not possible to check the knock sensor using resistance or voltage measurements.

POSSIBLE FAULTS
- Knock sensor faulty.