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.
P1248, P1249, P124A, P124B, P124C, or P124D
The engine control module detects the fuel injector high control circuit is shorted to the low control circuit for greater than 2 s.