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P0328 — Knock Sensor 1 Circuit High (Bank 1)

Knock sensor voltage above maximum threshold.

Severity: MediumRepair: $50-$400Difficulty: Medium

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Common symptoms of P0328

Common causes of P0328

Repair cost & difficulty

Typical cost to fix P0328: $50-$400 · Difficulty: Medium

Pro tip: High voltage can indicate actual engine knock — listen for knocking sounds before assuming sensor failure.

Vehicles commonly affected

All makes

Related trouble codes

P0325P0326P0327

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ScanFixAI is a diagnostic aid, not a substitute for professional repair. Cost estimates are typical ranges and vary by vehicle and region.