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P0AF5 OBD2: Drive Motor Inverter Temperature Sensor "B" Circuit High

P0AF5 OBD2: Drive Motor Inverter Temperature Sensor “B” Circuit High

The P0AF5 OBD-II code refers to a malfunction in the Drive Motor Inverter Temperature Sensor “B” Circuit, indicating a high voltage reading. This code is a crucial warning that the vehicle’s high voltage system may not operate effectively.

What Does the P0AF5 Code Mean?

This code means that the High Voltage Control Module has detected a high voltage or an unexpected change in temperature within the inverter/converter assembly. This is essential for maintaining optimal operating temperatures for the high voltage system.

What Causes the P0AF5 Code?

The P0AF5 code can be triggered by several issues related to the inverter/converter assembly, including:

  • Inverter/converter assembly failure
  • Issues with the embedded temperature sensors
  • Cooling system malfunctions

What Are the Symptoms of the P0AF5 Code?

Symptoms associated with this code may include:

  • High voltage system may not operate
  • High voltage system temperature light illuminated

How Serious Is the P0AF5 Code?

This code is classified as urgent and indicates that immediate action is necessary. If not addressed, it can lead to severe damage to the vehicle’s high voltage system and pose risks to the driver and passengers.

How to Diagnose the P0AF5 Code

Diagnosing the P0AF5 code involves:

  • Using an OBD-II scanner to confirm the code
  • Inspecting the inverter/converter assembly and related components
  • Testing the temperature sensor and cooling system functionality

Common Repairs for the P0AF5 Code

Common repairs may include:

  • Replacing the faulty inverter/converter assembly
  • Repairing or replacing the temperature sensor
  • Fixing cooling system issues

How Much Does It Cost to Fix the P0AF5 Code?

The cost to repair issues related to the P0AF5 code can vary widely based on the vehicle make and model, but you can expect to pay anywhere from $150 to $2,000, depending on whether you need to replace sensors or the inverter/converter assembly.

Can I Fix the P0AF5 Code Myself?

While some DIY enthusiasts may attempt to fix this code themselves, it is essential to approach this with caution. A proper diagnosis is crucial, and if you lack the necessary tools or experience, it is recommended to seek professional assistance to avoid further damage to the vehicle.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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