Engine-Codes - Generic - P0AE8

P0AE8 - Hybrid Battery Temperature Sensor 'D' Circuit

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

P0AE8 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 is the P0AE8 code repair?

Start by checking 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.

What is the cost to diagnose the P0AE8 code

Labor: 1.0

The cost to diagnose the P0AE8 code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

P0AE8 Meaning

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.

More Information

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Information for specific makes

  • P0AE8 LEXUS Hybrid Battery Temperature Sensor 'D' Circuit
  • P0AE8 NISSAN Hybrid Battery Temperature Sensor 'D' Circuit
  • P0AE8 TOYOTA Hybrid Battery Temperature Sensor 'D' Circuit

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