P0330 - SENSOR 2 CIRCUIT MALFUNCTION KNOCK (BANK 2)

POST UPDATED IN October, 2021

Description of DTC code P0330 Generic

The Knock Sensor (KS) is located in the engine and detects the spark. When a spark occurs, the KS sensor produces a voltage signal which is sent to the Powertrain Control Module (PCM) which delays the ignition time, thus preventing engine damage.

The Detonation Sensor (KS) contains a piezoelectric crystal inside. This crystal is used to produce AC voltage. In a sense, the KS sensor is a transducer device as it converts changes in physical quantity into an electrical signal. This sensor does not receive reference voltage from the PCM but rather creates its own voltage.

The DTC code P0330 OBD2 basically means that the PCM has detected a malfunction in the Detonation Sensor circuit. Some vehicles have two KS sensors, in this case, the code refers specifically to sensor number 2. This sensor corresponds to the side of the opposite engine where cylinder number 1 is located.

Symptoms of fault code P0330 Generic

Causes of OBD2 P0330 Generic

The factors that lead to the establishment of the diagnostic code P0330 OBDII are

  • Electrical components such as wires or connectors that are deficient in the Knock Sensor (KS) circuit causing problems in the circuit.
  • The Detonation Sensor may be defective.

Possible solutions of the DTC code P0330 Generic

When faced with fault code P0330 OBD2, you must do this:

  • Check the resistance of the KS sensor in bank number 2. Compare the results with the manufacturer's specifications.
  • Check all cables and respective connectors for problems in any of these. If you find any inconsistencies, you should make the appropriate repairs and, if necessary, replace them.
  • Change the Detonation Sensor in bank 2.

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