Conditions for Setting the DTC

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

The PPS detects the voltage at the pressure sensor signal is less than 0.05 volt or greater than 4.5 volts for 500 milliseconds.
The PPS detects the voltage at the pressure sensor voltage 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 25mA or greater for 500 milliseconds.