Engine-Codes - Generic - P0AE9

P0AE9 Code - Hybrid Battery Temperature Sensor 'D' Range/Performance

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

|P0AE9 code 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 P0AE9 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 P0AE9 code

Labor: 1.0

The cost to diagnose the P0AE9 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0AE9 code possible symptoms?

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

|What is P0AE9 code 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.

|Need more information with the P0AE9 code?

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|P0AE9 code information for specific makes

  • P0AE9 BUICK Hybrid Battery 4 Temperature Sensor Performance
  • P0AE9 CADILLAC Hybrid Battery 4 Temperature Sensor Performance
  • P0AE9 CHEVROLET Hybrid Battery 4 Temperature Sensor Performance
  • P0AE9 GMC Hybrid Battery 4 Temperature Sensor Performance
  • P0AE9 HONDA High Voltage Battery Module Temperature Sensor 4 Range/Performance Problem
  • P0AE9 LEXUS Hybrid Battery Temperature Sensor 'D' Range/Performance
  • P0AE9 NISSAN Hybrid Battery Temperature Sensor 'D' Range/Performance
  • P0AE9 SATURN Hybrid Battery 4 Temperature Sensor Performance
  • P0AE9 TOYOTA Hybrid Battery Temperature Sensor 'D' Range/Performance

|Need help with a P0AE9 code?

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