P0327

P0327 means: Knock Sensor 1 Circuit Low Bank 1. The knock sensor signal voltage is below the minimum expected level.

Knock Sensor 1 Circuit Low Bank 1

The knock sensor signal voltage is below the minimum expected level.

SeverityModerate

CategoryEngine

Est. Repair Cost$100–$300

Code TypePowertrain

DIY RepairYes

💡 Pro Tip: A shorted knock sensor wire causes the ECU to retard timing as a safety measure — performance loss is immediate.

Full Repair Estimate

$100–$300

DIY Possible?

YES

Severity

Moderate

What does OBD2 code P0327 mean?+

P0327 stands for Knock Sensor 1 Circuit Low Bank 1. The knock sensor signal voltage is below the minimum expected level.

What causes code P0327?+

Short to ground in knock sensor wiring; Failed knock sensor; Loose sensor connection

How do I fix code P0327?+

Check wiring for short to ground; Test sensor resistance; Replace knock sensor

How much does it cost to fix P0327?+

Estimated repair cost for P0327 is $100–$300.

Is P0327 DIY-friendly?+

Yes — P0327 is generally DIY-friendly with basic tools.