Drive Motor Inverter Temperature Sensor B Circuit High

Where it lives

For P0AF5, the circuit described runs through the sensor. The description of P0AF5 reports a fault at the sensor.

Check these first

• An open in the inverter sensor B circuit
• A failed inverter temperature sensor B reading high
• A drive motor inverter that is overheating
• Corrosion in the sensor B connector

What to do next

1. Read inverter temperature sensor B voltage on a scan tool
2. Check the sensor B circuit for an open
3. Compare the sensor B reading to actual inverter temperature
4. Check the inverter cooling for a blockage
5. Replace sensor B if the reading stays high
6. Clear the code and retest

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