Engine-Codes - Generic - P0AF9

P0AF9 Code - Hybrid Battery System Voltage Unstable

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0AF9 code 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 is the P0AF9 code repair?

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 P0AF9 code

Labor: 1.0

The cost to diagnose the P0AF9 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 P0AF9 code possible symptoms?

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

|What is P0AF9 code meaning?

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.

|Need more information with the P0AF9 code?

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|P0AF9 code information for specific makes

|Need help with a P0AF9 code?

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