AutoCodesGMC – P0AE9 2015 GMC Sierra

P0AE9 2015 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 4 Performance

Quick Answer

Hybrid/EV Battery Temperature Sensors are used to monitor the battery temperature. Common causes include Faulty Hybrid/EV Battery Assembly, Hybrid/EV Battery Assembly harness is open or shorted, Hybrid/EV Battery Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P0AE9 2015 GMC Sierra indicates Hybrid/EV Battery Temperature Sensor 4 Performance.
Common causes
Common causes include Faulty Hybrid/EV Battery Assembly, Hybrid/EV Battery Assembly harness is open or shorted, Hybrid/EV Battery Assembly circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 177
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 22, 2024
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Code P0AE9 2015 GMC Sierra Description

Hybrid/EV Battery Temperature Sensors are used to monitor the battery temperature. The non-serviceable battery temperature sensors are located within the battery sections. Two temperature sensors are located in each battery section. The temperature sensor is a variable resistor that measures the temperature of the battery cell group. The hybrid/EV interface control module supplies 5 V to the signal circuit and is a ground for the low reference circuit. The battery temperature sensor resistance changes with battery temperature. As the temperature decreases, the sensor resistance increases. As the temperature increases, the sensor resistance decreases.
Each Hybrid/EV Battery Interface Control Module communicates the temperature sensor values to the Hybrid/EV Powertrain Control Module via serial data.
The Hybrid/EV Powertrain Control Module uses the battery temperature sensors to determine the Hybrid/EV Battery Module temperature in order to control the battery cooling system operation.
The Diagnostic Trouble Code (DTC) will be set when the difference between a single battery temperature sensor and an average of the other battery temperature sensors is greater than 25°C (45°F).
OBDII Code P0AE9 2015 GMC Sierra - Hybrid/EV Battery Temperature Sensor 4 Performance - AutoCodes.com
P0AE9 2015 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 4 Performance

What are the Possible Causes of the DTC P0AE9 2015 GMC Sierra?

  • Faulty Hybrid/EV Battery Assembly
  • Hybrid/EV Battery Assembly harness is open or shorted
  • Hybrid/EV Battery Assembly circuit poor electrical connection
  • Faulty Hybrid/EV Battery Interface Control Module

How to Fix the DTC P0AE9 2015 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0AE9 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0AE9 2015 GMC Sierra code?

Need more information on how to fix the P0AE9 2015 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0AE9 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P0AE9 in a 2015 GMC Sierra Hybrid/EV?

The common symptoms include reduced fuel efficiency, decreased power output, and the illumination of the check engine light.

2. What does the OBDII code P0AE9 indicate in a 2015 GMC Sierra Hybrid/EV?

Code P0AE9 specifically relates to the performance of Hybrid/EV Battery Temperature Sensor 4.

3. What are the possible causes of OBDII code P0AE9 in a 2015 GMC Sierra Hybrid/EV?

Possible causes of this code may include a faulty Hybrid/EV Battery Temperature Sensor 4, wiring issues, or problems with the hybrid battery itself.

4. How can I diagnose the issue related to OBDII code P0AE9 in my 2015 GMC Sierra Hybrid/EV?

Diagnosis typically involves using a scan tool to read the code, checking the Hybrid/EV Battery Temperature Sensor 4 for proper operation, and inspecting related wiring and connections.

5. Is it safe to continue driving with OBDII code P0AE9 present in a 2015 GMC Sierra Hybrid/EV?

It is recommended to address the issue promptly to prevent potential damage to the hybrid system. Continued driving with this code may lead to further issues and reduced performance.

6. Can I repair OBDII code P0AE9 in my 2015 GMC Sierra Hybrid/EV on my own?

While some basic troubleshooting steps can be taken, it is advisable to consult a qualified mechanic or dealership for accurate diagnosis and repair of issues related to Hybrid/EV systems.

7. What are the repair options for resolving OBDII code P0AE9 in a 2015 GMC Sierra Hybrid/EV?

Repair options may include replacing the faulty Hybrid/EV Battery Temperature Sensor 4, repairing damaged wiring, or addressing issues with the hybrid battery as needed.

8. How much does it typically cost to fix OBDII code P0AE9 in a 2015 GMC Sierra Hybrid/EV?

The cost of repair can vary depending on the specific cause of the issue, parts needed, and labor costs. It is recommended to obtain quotes from reputable repair shops for an accurate estimate.

9. Are there any preventive measures to avoid OBDII code P0AE9 in a 2015 GMC Sierra Hybrid/EV?

Regular maintenance, such as checking the hybrid system components and ensuring proper operation, can help prevent issues leading to OBDII code P0AE9.

10. Can a low or high ambient temperature affect the performance of the Hybrid/EV Battery Temperature Sensor 4 in a 2015 GMC Sierra?

Extreme temperatures can impact the performance of the sensor and the overall efficiency of the hybrid system. It is essential to monitor and maintain suitable operating conditions for optimal performance.

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