Home › Codes › Sensor & timing codes

P0330: Knock Sensor 2 Circuit Malfunction (Bank 2)

Severity: Medium Avoid hard acceleration and heavy engine loads until diagnosed. If there is loud knocking, an oil-pressure warning, or overheating, stop the engine and arrange inspection rather than continuing to drive.

What does P0330 mean?

The knock sensor 2 circuit on bank 2 has a malfunction. The engine computer may use conservative ignition timing because it cannot reliably monitor knock from that sensor.

Generic OBD-II definition: Knock Sensor 2 Circuit Malfunction (Bank 2). Confirm applicability in your vehicle service information.

Common causes

  • Failed bank 2 knock sensor
  • Open or shorted sensor harness
  • Corroded sensor connection

Symptoms

  • Check engine light
  • Hesitation or reduced power
  • Possible pinging or unusual engine noise

Diagnostic focus

Sensor 2 location varies; it is not always visible on the outside of the block. Inspect accessible wiring before authorizing intake-manifold removal just to reach the sensor.

Can I keep driving with P0330?

Severity: Medium Avoid hard acceleration and heavy engine loads until diagnosed. If there is loud knocking, an oil-pressure warning, or overheating, stop the engine and arrange inspection rather than continuing to drive.

If the check engine light is flashing or the car runs badly, stop driving and have it checked.

Typical fixes

  • Identify knock sensor 2 using the engine diagram
  • Inspect the harness and terminal condition
  • Test the sensor circuit to the manufacturer specification

Related codes

P0325
Knock Sensor 1 Circuit (Bank 1 or Single Sensor)P0326
Knock Sensor 1 Circuit Range/Performance (Bank 1)P0327
Knock Sensor 1 Circuit Low Input (Bank 1)P0328
Knock Sensor 1 Circuit High Input (Bank 1)P0331
Knock Sensor 2 Circuit Range/Performance (Bank 2)P0332
Knock Sensor 2 Circuit Low Input (Bank 2)

Sources & review

Definitions and diagnostic background checked 2026-11-06. Generic guidance, not a substitute for the service procedure for your exact year, engine, and transmission.