Conditions for Setting the DTC
P257D
The hood ajar switch signal 2 voltage as measured by the Body Control Module is not within a valid voltage range.
P257E
The Body Control Module detects a short to ground in the hood ajar signal input to the Body Control Module.
P257F
The Body Control Module detects a short to voltage or an open/high resistance in the hood ajar signal input to the Body Control Module.