Conditions for Setting the DTC

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

P0325

The KS signal circuits are open or shorted together for 6 seconds.

P0326

The KS signal indicates an excessive engine knock is present.
The control module commanded spark retard at a given engine load and speed is more than the calibrated value.
The above conditions exist for 6 seconds.

P0327 and P0328

The KS signal circuits are shorted to ground or power.