P0326 — Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
What it means
P0326 is an OBD-II diagnostic trouble code: Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor).
Typical fix
Confirm the code with an OBD-II scanner, then inspect the component or circuit named above. Consult a vehicle-specific service manual for the full diagnostic and repair procedure.