Engine-Codes - Generic - P0AFA

P0AFA Code - Hybrid Battery System Voltage Low

- Code Popularity: 25,105 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 P0AFA?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Battery Smart Unit
  • Battery Smart Unit harness is open or shorted
  • Battery Smart Unit circuit poor electrical connection
  • Faulty Hybrid Vehicle (HV) Battery
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How to Fix the DTC P0AFA?

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 P0AFA 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 P0AFA Code Mean?

The Battery Smart Unit monitors the voltage of the battery blocks to detect an open malfunction in the internal battery voltage sensor circuits of the Battery Smart Unit and the wire harness between each battery block and Battery Smart Unit. If a voltage at one of the battery blocks is below a standard level or of all the battery blocks is within a specified range, the Battery Smart Unit judges that there is an open in the internal sensor circuit(s) or wire harness. The Hybrid Vehicle (HV) Control ECU then illuminates the MIL and sets a Diagnostic Trouble Code (DTC).

P0AFA Code - Hybrid Battery System Voltage Low

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Code P0AFA Information for Specific Makes

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