Conditions For Setting DTC

WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.

The ratio of 18X reference pulses to CAM signal pulses received by the PCM equals 36:1.
The ratio of 18X reference pulses to 3X reference pulses received by the PCM does not equal 6:1.
The conditions are present for up to 30 seconds.