P0328

P0328 means: Knock Sensor 1 Circuit High Bank 1. The knock sensor signal is above the maximum expected voltage.

Knock Sensor 1 Circuit High Bank 1

The knock sensor signal is above the maximum expected voltage.

SeverityModerate

CategoryEngine

Est. Repair Cost$100–$300

Code TypePowertrain

DIY RepairYes

💡 Pro Tip: A high knock sensor signal may prevent the ECU from retarding timing during actual detonation — causing engine damage.

Full Repair Estimate

$100–$300

DIY Possible?

YES

Severity

Moderate

What does OBD2 code P0328 mean?+

P0328 stands for Knock Sensor 1 Circuit High Bank 1. The knock sensor signal is above the maximum expected voltage.

What causes code P0328?+

Open circuit in knock sensor wiring; Failed sensor; Short to power in signal wire

How do I fix code P0328?+

Check for open circuit in wiring; Test sensor; Replace knock sensor

How much does it cost to fix P0328?+

Estimated repair cost for P0328 is $100–$300.

Is P0328 DIY-friendly?+

Yes — P0328 is generally DIY-friendly with basic tools.