Conditions for Running the DTC

WARNING: This page is about a different car, the 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

Before the ECM can report DTC P0327 or P0332 failed, DTC P0324 must run and pass.
DTCs P0324, P0335, P0336, P0338, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, and P0393 are not set.
The ECM is controlling spark.
The engine coolant temperature (ECT) sensor is more than 40° C (104° F).
The engine speed is more than 2,000 RPM and steady.
The volumetric efficiency is steady.
DTC P0327 and P0332 run continuously once the above conditions are met for more than 1 second.