Conditions for Setting DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.

The difference between APP 2 and APP 3 is more than 0.50 volts. The PCM compares pre-scaled voltage that is internal to the PCM.
The difference between APP 2 and APP 1 is more than 0.23 volts. The PCM compares the pre-scaled voltage that is internal to the PCM.
The conditions were met for 2 seconds.