Conditions for Setting the DTC
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
P057B
ECM detects the BPP sensor signal is stuck in a range for greater than 1 s.
P057C
ECM detects the BPP sensor voltage is less than 0.25 V greater than 1 s.
P057D
ECM detects the BPP sensor voltage is greater than 4.75 V greater than 1 s.