P0330: Knock sensor 2 circuit malfunction (Bank 2)
Drive carefully. Get it checked within a week or two.
Can I drive with P0330?
Yes, but drive carefully and get it checked soon. Bank 2 knock sensor circuit fault; computer backs off timing, reducing horsepower.
What does P0330 mean?
P0330 stands for Knock Sensor 2 Circuit Malfunction (Bank 2).
Symptoms you may notice
- Check engine light steadily illuminated
- Slight hesitation or change in throttle response
- Possible increase in fuel consumption
How much does it cost to fix?
Repair costs for code P0330 depend on the specific underlying root cause, ranging from simple DIY checks to component replacement. The table below lists the most common causes and rough price ranges in USD:
- Failed Bank 2 knock sensor
- Corroded wiring plug in engine block valley
- Rodent damage to wiring harness
- Improper torque on knock sensor
What to do next
- Inspect wiring harness in the engine valley.
- Test resistance of Bank 2 knock sensor.
- Replace the knock sensor and sub-harness.
Last updated: October 2026
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General guidance only, not a professional diagnosis. If the check-engine light is flashing, or the car is running rough, overheating or losing power, stop driving and get help.
About this code
Code P0330 is very common on Toyota and Lexus V6 engines (Camry, Highlander, RX350). The sensors sit under the intake manifold and fail with age. Driving is safe, but acceleration is sluggish.