P0330 Knock Sensor 2 Circuit Malfunction (Bank 2)

Technical description

Knock Sensor 2 Circuit Malfunction (Bank 2)

What does this mean?

This Diagnostic Trouble Code (DTC) is a generic transmission code, which means it applies to OBD-II equipped vehicles. Although general, specific repair steps may differ depending on the brand / model.

The knock sensor tells the engine computer when one or more of your engine's cylinders "knock", that is, they explode the air / fuel mixture in such a way as to provide less power and cause engine damage if it continues to run. The computer uses this information to tune the engine so that it does not knock. If your knock sensor was not working properly and always indicated knock, the engine computer may have changed the ignition timing on your engine in response. Knock sensors are usually bolted or screwed into the cylinder block.

This Code P0330 may appear intermittently, or the Service Engine light may remain on. Other DTCs associated with the knock sensor include P0325.

symptoms

You may notice handling issues including lack of power and possibly some wobbling. There may be other symptoms as well.

reasons

The P0330 code most likely means that one or more of the following events have occurred:

Knock sensor "B" is defective and needs to be replaced.
Short circuit / malfunction in the knock sensor circuit.

Possible solutions

Check the resistance of the knock sensor on block 2 (compare with factory specifications)
Check for broken / frayed wires leading to the sensor.
Replace bank 2 knock sensor.

Sources: W. Farmer-Nissan.

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