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.
B2508 02
Before the heated seats are activated, the seat heating control module detects a short to ground on the seat heating element supply voltage circuit or control circuit.
B2508 01
Before the heated seats are activated, the seat heating control module detects a short to battery voltage on the seat heating element supply voltage circuit or control circuit.