P0330 Code: Knock Sensor 2 Circuit Malfunction (Bank 2)
🟠 Moderate severity · drivable
Drivable, but the computer can't detect knock on bank 2 and may reduce performance, so fix it soon.
What P0330 means
The bank 2 knock sensor isn't sending a proper signal, so the computer can't protect bank 2 from engine knock (pinging).
Symptoms
- Check engine light is on
- Reduced power
- Possible engine pinging
- Poor fuel economy
Common causes
- most common: Faulty knock sensor (bank 2)
- common: Damaged wiring or loose connector
- less common: Excessive engine mechanical noise
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Replace the bank 2 knock sensor | Yes | $50–200 |
| Repair damaged sensor wiring | Mechanic | $50–150 |
Frequently asked questions
Can I drive with a P0330 code?
Yes, but you may notice reduced power. Fix it soon.
What is the most common cause of P0330?
A faulty bank 2 knock sensor.
How much does it cost to fix a P0330?
Typically $50–$200 for a new knock sensor.
Related codes
P0325
P0325 Code: Knock Sensor 1 Circuit Malfunction (Bank 1)
P0332P0332 Code: Knock Sensor 2 Circuit Low Input (Bank 2)
P0333P0333 Code: Knock Sensor 2 Circuit High Input (Bank 2)
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.