P0333

DTC P0333
Knock sensor fault bank 2 Drive cycle B:Signal out of range - above maximum.

Possible causes by suggested order of priority:
^ Connectors C626, ECM C636 (B).
^ Open circuit - C626/1 (KB) to C636/36 (KB).
^ Open circuit - C626/2 (B) to C636/35 (-).
^ Short circuit - C626/1 (KB) to vehicle earth.
^ Knock sensor fixing torque incorrect.
^ Knock sensor seating face contaminated.
^ Knock sensor faulty.

Connectors C626, ECM C636 (B).
CONNECTOR
^ Check for connector not correctly latched, backed out pins, damaged pins, corroded pins.

Open Circuit - C626/1 (KB) To C636/36 (KB).
OPEN_CIRCUIT
^ Check resistance > 1M Ohm

Open Circuit - C626/2 (B) To C636/35 (-).
OPEN_CIRCUIT
^ Check resistance > 1M Ohm

Short Circuit - C626/1 (KB) To Vehicle Earth.
SHORT_CIRCUIT
^ Check resistance < 5.0 ohms

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.
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.