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Code

P0328

Ignition / Knock

Knock sensor 1 circuit high input

The knock sensor circuit reads too high.

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Most likely causes

Faulty knock sensor
Open wiring
Wiring rubbed through

Symptoms you may notice

Check engine light
Loss of performance

Checks to run

Test sensor signal
Inspect wiring

Tools you may need

Multimeter

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Ignition / Knock

Knock sensor circuit malfunction — Bank 1

Knock sensor 1 circuit low input

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