Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
P2122
APP Sensor 1 = Less than 0. 32 V - For greater than 175 ms
P2123
APP Sensor 1 = Greater than 4. 75 V - For greater than 175 ms
P2127
APP Sensor 2 = Less than 0. 16 V - For greater than 175 ms
P2128
APP Sensor 2 = Greater than 2. 4 V - For greater than 175 ms
P2138
APP Sensor 1 and 2 = Not within a calibrated range - For greater than 188 ms