Engine-Codes - Gmc - P0AFB GMC

P0AFB GMC Code - Hybrid Battery System Voltage High

- Code Popularity: 1,202 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the P0AFB GMC Code?

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

|How to Fix the P0AFB GMC Code?

Start by checking 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.

|What is the cost to diagnose the P0AFB GMC code?

Labor: 1.0

The cost to diagnose the P0AFB GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0AFB GMC code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P0AFB GMC Code Mean?

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.

Hybrid Battery System Voltage High

|Need more information with the P0AFB GMC code?

Need more information on how to fix the P0AFB GMC code?
Get Access to Factory Service Manuals

|Need help with a P0AFB GMC code?

Get the P0afb Gmc code diagnosed by a professional: Find a repair shop in your area