P0328: Knock sensor 1 circuit high input (Bank 1)
Drive carefully. Get it checked within a week or two.
Can I drive with P0328?
Yes, but drive carefully and get it checked soon. Knock sensor circuit open or shorted to power; timing retarded, safe to drive.
What does P0328 mean?
P0328 stands for Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor).
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 P0328 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:
- Open circuit / broken wire in knock sensor harness
- Defective knock sensor internal crystal
- Loose connector pin
- Over-torqued sensor bolt
What to do next
- Check continuity of knock sensor harness wires.
- Inspect connector for moisture or green corrosion.
- Replace the knock sensor.
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 P0328 indicates an open circuit on the knock sensor. The car remains safe to drive home or to a shop.