Conditions 2

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Before the ECM can report DTC P0324 failed, DTC P0335, P0336 and P0338 must run and pass.
The ECM is controlling spark.
The engine speed is between 1,000-4,000 RPM and steady.
The volumetric efficiency is steady.
DTC P0324 runs continuously every 510 engine revolutions, once the above conditions are met for a total 50 seconds.