P0AE9 2016 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 2016 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.
Code P0AE9 2016 GMC Sierra Description
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).
What are the Possible Causes of the DTC P0AE9 2016 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 2016 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 2016 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.
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Frequently Asked Questions about P0AE9 2016 GMC Sierra Code
1. What does the OBDII code P0AE9 mean on a 2016 GMC Sierra?
Code P0AE9 indicates an issue with the Hybrid/EV Battery Temperature Sensor 4, specifically related to its performance or functionality.
2. What are the symptoms of code P0AE9 on a 2016 GMC Sierra?
Common symptoms include the check engine light turning on, reduced hybrid system performance, decreased fuel efficiency, and possible limited power mode.
3. What causes the P0AE9 code to trigger in the 2016 GMC Sierra?
Possible causes include a faulty battery temperature sensor, damaged wiring or connectors, a malfunctioning hybrid battery control module, or an overheating battery.
4. Is it safe to drive a 2016 GMC Sierra with code P0AE9?
While the vehicle may still be drivable, ignoring the issue can lead to further damage to the hybrid battery system and reduced performance. It's best to address the problem promptly.
5. How is code P0AE9 diagnosed in a 2016 GMC Sierra?
A technician will use a scan tool to verify the code, inspect the Hybrid/EV Battery Temperature Sensor 4 and its wiring, and check for any related issues with the hybrid battery system.
6. Can a loose connection cause the P0AE9 code in a 2016 GMC Sierra?
Yes, a loose or corroded connection in the wiring harness can lead to improper readings from the temperature sensor and trigger the code.
7. How can I fix the P0AE9 code on my 2016 GMC Sierra?
Repairs may involve replacing the faulty battery temperature sensor, repairing damaged wiring, or reprogramming or replacing the hybrid battery control module.
8. How much does it cost to repair the P0AE9 code on a 2016 GMC Sierra?
Repair costs vary depending on the exact issue but can range from $100–$500 for sensor replacement or wiring repairs. More extensive repairs, such as replacing the hybrid battery, can cost significantly more.
9. Can extreme weather cause the P0AE9 code on a 2016 GMC Sierra?
Yes, extreme heat or cold can affect the battery temperature sensor's readings and may contribute to triggering the P0AE9 code.
10. Do I need to replace the hybrid battery to fix the P0AE9 code on a 2016 GMC Sierra?
Not necessarily. In many cases, the issue is isolated to the temperature sensor or its wiring. However, if the hybrid battery is overheating or damaged, replacement may be required.
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