Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
P157A
The ECM detects continued communication on sensor bus when commanded OFF for greater than 0.25 s.
P16D7
The ECM detects an open sensor bus circuit voltage compared to a calibrated threshold for greater than 0.25 s.
P16D8
The ECM detects a short to ground sensor bus circuit compared to a calibrated threshold for greater than 0.25 s.
P16D9
The ECM detects a short to voltage sensor bus circuit compared to a calibrated threshold for greater than 0.25 s.