Question 1

What does P0326 mean?

Accepted Answer

P0326 - Knock Sensor 1 Range/Performance (Bank 1). Knock sensor signal is present but not within expected range.

Question 2

What are the symptoms of P0326?

Accepted Answer

Check engine light, Possible detonation under load, Retarded timing (power loss)

Question 3

What causes P0326?

Accepted Answer

Loose knock sensor bolt (torque critical), Failing sensor, Engine mechanical noise, Wiring resistance

Question 4

How much does it cost to fix P0326?

Accepted Answer

Typical repair cost: $50-$400. Knock sensor bolt must be torqued to exact spec — too loose or too tight both cause issues.

P0326 — Knock Sensor 1 Range/Performance (Bank 1)

Don't guess — diagnose P0326 the right way