P0AF5 Possible Causes
- Faulty inverter with converter assembly
- Inverter with converter assembly harness open or shorted
- Inverter with converter assembly circuit poor electrical connection
- Faulty HV control ECU
What Does It Mean?
How to Fix Code P0AF5
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.
P0AF5 Possible Symptoms
Check engine light illuminated (or service engine soon warning light)
P0AF5 Meaning
The HV control ECU uses a temperature sensor integrated into the inverter to detect the motor inverter temperature. The same cooling system routed to MG1 and MG2 cools the inverter. This cooling system is independent of the engine cooling system.
The motor inverter temperature sensor characteristic is the same as the boost converter temperature sensor.
The HV control ECU limits the load based on signals from the motor inverter temperature sensor to verify the inverter cooling system efficiency and prevent the inverter from overheating. Additionally, the HV control ECU detects malfunctions in the motor drive temperature sensor wiring and in the sensor itself.