Engine-Codes - Generic - P0AFB

P0AFB Code - Hybrid Battery System Voltage High

- Code Popularity: 5,331 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC P0AFB?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • 36 volt battery cable open
  • Hybrid Battery Pack fuse open
  • Hybrid Battery Pack contactor open
  • Hybrid Battery Pack ground cable or connection
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How to Fix the DTC P0AFB?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

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

What are Code Possible Symptoms?

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

What Does the P0AFB 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.

P0AFB Code - Hybrid Battery System Voltage High

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Code P0AFB Information for Specific Makes

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