Conditions for Setting the DTC

WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: The ECM detects engine movement by sensing the airflow through the mass air flow (MAF) sensor when airflow is greater than 3 grams per second, or by sensing CMP sensor pulses.

The ECM detects that the engine is running, but receives less than 55 or more than 61 CKP sensor pulses, during each engine revolution, for 8 of 10 engine revolutions.
The ECM detects that the engine is running, but more than 25 crankshaft resyncs have occurred within 25 seconds.