P0330 Fault Code

Knock Sensor 2 Circuit (Bank 2)

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0330 fault code indicates a problem with the Knock Sensor 2 circuit in Bank 2 of the engine. The knock sensor is crucial for detecting engine knock (detonation) and adjusting the ignition timing accordingly. When a fault occurs in this circuit, it can lead to poor engine performance and increased emissions.

What are the symptoms of the P0330 code?

When this fault code is triggered, you may experience:

• Illuminated check engine light
• Reduced engine performance
• Increased fuel consumption
• Rough idling or hesitation during acceleration
• Symptoms may vary depending on other underlying issues

What causes the P0330 code?

Common causes for the P0330 error code include:

• Faulty knock sensor itself
• Damaged or frayed wiring in the sensor circuit
• Poor electrical connections or corrosion in the connector
• Engine management issues or faulty engine control module (ECM)
• Engine misfires or other performance issues that mimic knock

How to fix P0330?

To resolve the P0330 fault code, follow these steps:

1. Use a diagnostic scanner to confirm the code and check for related codes.
2. Inspect the wiring and connectors for any damage or corrosion. Repair or replace as necessary.
3. Test the knock sensor using a multimeter to ensure it is functioning correctly. Replace if faulty.
4. Clear the fault codes and test drive the vehicle to see if the issue reoccurs.
5. If symptoms persist, consider checking the ECM or other related components.