P0AFA CHEVROLET – Hybrid Battery System Voltage Low

P0AFA CHEVROLET Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P0AFA CHEVROLET Possible Causes

36 volt battery cable open,Hybrid Battery Pack fuse open,Hybrid Battery Pack contactor open,Hybrid Battery Pack ground cable or connection

P0AFA CHEVROLET Description

The Engine Control Module (ECM) monitors the correlation of the generator battery disconnect control module battery voltage and the Starter Generator Control Module (SGCM) output voltage to detect a 36 volt cable open or fuse/relay failure. The ECM also monitors to detect an over voltage condition and protect the MOSFET (load dump). If either one of these conditions is detected, the appropriate Diagnostic Trouble Code (DTC) will set.