Diagnostic Aids
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
A reduced hybrid battery power condition is most noticeable during high electrical loads such as Autostop to Autostart transitions. Inspect for hybrid battery DTCs or conditions that would reduce available hybrid battery power such as:
- Hybrid Battery Module undervoltage / P0AFA and various DTCs
- Hybrid Battery Module overvoltage / various DTCs
- Hybrid Battery Module voltage variation / P0AFA, P0BBD
- Hybrid Battery overtemperature / P0C32
- Hybrid Battery exposure to extreme cold