Drive Motor Inverter Temperature Sensor B Circuit Range/Performance

Where it lives

For P0AF3, start at the sensor the description names.

Check these first

• A sensor B that reads off from the inverter temperature
• Corrosion in the sensor B connector
• A sensor B installed with poor contact to the inverter
• A drive motor inverter running hot

What to do next

1. Compare sensor B to the inverter coolant temperature
2. Measure the sensor B resistance against temperature
3. Inspect the sensor B connector for corrosion
4. Check the inverter cooling for a blockage
5. Replace sensor B if it reads off spec
6. Clear the code and retest

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