P0AF0 - Drive Motor Inverter Temperature Sensor 'A' Circuit High

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

P0AF0 Possible Causes

  • Faulty Inverter With Converter Assembly
  • Inverter With Converter Assembly harness is open or shorted
  • Inverter With Converter Assembly circuit poor electrical connection
  • Faulty HV Control ECU

How do I fix code P0AF0?

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's pins.

Cost of diagnosing the P0AF0 code

Labor: 1.0

The cost of diagnosing the P0AF0 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0af0 Description

The HV control ECU uses a temperature sensor, which is built into the inverter, to detect the temperature of the motor inverter. The same cooling system that is routed to the MG1 and MG2 cools the inverter. This cooling system is independent from the engine cooling system.
The characteristic of the motor inverter temperature sensor is the same as the boost converter temperature sensor.
The HV control ECU limits the load based on the signals transmitted by the motor inverter temperature sensor, in order to check the effectiveness of the inverter cooling system and prevent the inverter from overheating. Furthermore, the HV control ECU detects a malfunction in the wiring of the motor inverter temperature sensor, as well as in the sensor itself.
OBDII Code P0af0 - Drive Motor Inverter Temperature Sensor 'A' Circuit High - AutoCodes.com

P0AF0 More Information

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Information for specific makes

  • P0AF0 BUICK Drive Motor Inverter Temperature Sensor Circuit High Voltage
  • P0AF0 CADILLAC Drive Motor Inverter Temperature Sensor Circuit High Voltage
  • P0AF0 CHEVROLET Drive Motor Inverter Temperature Sensor Circuit High Voltage
  • P0AF0 GMC Drive Motor Inverter Temperature Sensor Circuit High Voltage
  • P0AF0 LEXUS Drive Motor Inverter Temperature Sensor 'A' Circuit High
  • P0AF0 NISSAN Drive Motor Inverter Temperature Sensor 'A' Circuit High
  • P0AF0 TOYOTA Drive Motor Inverter Temperature Sensor 'A' Circuit High

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