Conditions For Setting DTC
WARNING: This page is about a different car, the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, and 2002 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Cranking Test
- The Alternative Fuels ECM monitors a MAF sensor signal of less than 125 Hz (0 gms/sec) for at least 0.5 second continuously.
Running Test
- The Alternative Fuels ECM monitors a MAF sensor signal of less than 1500 Hz (2.5 gms/sec) for at least 0.5 second continuously.