Conditions for Setting the DTC

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

The ECM detects that the engine was started, but has received less than 2 or more than 8 CMP sensor pulses during the first engine resolution.
The ECM detects that the engine has started and is running, but receives less than 398 or more than 402 CMP pulses per 100 engine cycles in 800 of 1000 engine cycles.