P0AF5 Fault Code

Drive Motor Inverter Temperature Sensor "B" Circuit High

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0AF5 fault code indicates an issue with the Drive Motor Inverter Temperature Sensor "B" circuit, specifically reporting a high temperature. This sensor is crucial for monitoring the inverter's temperature to prevent overheating and ensure efficient operation. This code may trigger a warning light on the dashboard, alerting the driver to potential problems within the electric drive system.

What are the symptoms of the P0AF5 code?

Common symptoms associated with the P0AF5 fault code may include:

• Dashboard warning lights related to the electric drive system.
• Reduced performance of the electric drivetrain, manifesting as lack of power or sluggish acceleration.
• Increased operational noise from the electric motor or inverter.
• Vehicle may enter a 'limp' mode to protect itself from damage.

What causes the P0AF5 code?

Possible causes of the P0AF5 code include:

• A malfunctioning temperature sensor 'B' that is reading incorrect values.
• Poor electrical connections or damaged wiring in the circuit.
• Overheating of the drive motor inverter due to operational issues or excessive load.
• Issues with the inverter itself that affect temperature readings.

How to fix P0AF5?

To resolve the P0AF5 fault code, consider the following steps:

• Inspect the temperature sensor 'B' for signs of damage and replace it if necessary.
• Check all wiring and electrical connections in the temperature sensor circuit for corrosion or damage, repairing as needed.
• Test the temperature sensor using diagnostic tools to ensure accurate readings are being sent to the control module.
• If the issue persists, examine the inverter for overheating problems and verify if any cooling system components need servicing.