P0AFB GMC - Hybrid Battery System Voltage High
P0AFB GMC Possible Causes
- 36 volt battery cable open
- Hybrid Battery Pack fuse open
- Hybrid Battery Pack contactor open
- Hybrid Battery Pack ground cable or connection
How do I fix code P0AFB GMC?Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
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Cost of diagnosing the P0AFB GMC code
Labor: 1.0The cost of diagnosing the P0AFB GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
- Engine Light ON (or Service Engine Soon Warning Light)
P0AFB GMC DescriptionThe 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.
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