Conditions for Setting the DTC

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The PPS detects the voltage at the PPS sensor signal is less than 0.05-volt or greater than 4.5 volts for 500 milliseconds.
The PPS detects the voltage at the PPS sensor 5-volt reference is less than 4.5 volts or greater than 9.1 volts for 500 milliseconds.
The PPS detects the amperage at the PPS sensor low reference is 25 mA or greater for 500 milliseconds.