Conditions for Setting the DTC
WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
P1A8B 00
42 volt circuit temperature is greater than 105°C (221°F).
P1A8B 11
42 volt circuit temperature is greater than 115°C (239°F).
P1A8C
42 volt circuit temperature is greater than 125°C (257°F).