AutoCodes – GMC – P0AEB 2018 GMC Sierra

P0AEB 2018 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage

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: P0AEB 2018 GMC Sierra indicates Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage.
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 181

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 22, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0AEB 2018 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 hybrid battery temperature sensor is less than -69°C (-92°F).

OBDII Code P0AEB 2018 GMC Sierra - Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage - AutoCodes.com — P0AEB 2018 GMC Sierra Code - Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0AEB 2018 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 P0AEB 2018 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 P0AEB 2018 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 P0AEB 2018 GMC Sierra code?

Need more information on how to fix the P0AEB 2018 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 P0AEB 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P0AEB in a 2018 GMC Sierra Hybrid/EV?

The common symptoms of code P0AEB may include the check engine light illuminating, reduced hybrid/EV system performance, and potential issues with battery temperature regulation.

2. What causes the OBDII code P0AEB to trigger in a 2018 GMC Sierra Hybrid/EV?

The P0AEB code is typically triggered when the Hybrid/EV Battery Temperature Sensor 4 Circuit detects a high voltage condition, indicating a potential issue with the sensor itself, wiring, or the hybrid/EV battery system.

3. How can I diagnose the Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage issue in my 2018 GMC Sierra?

Diagnosing the P0AEB code may involve using a scan tool to read the code, checking the sensor's wiring and connections for any damage or loose connections, and testing the sensor's voltage output according to manufacturer specifications.

4. Can I drive my 2018 GMC Sierra with the OBDII code P0AEB present?

It is not recommended to drive your vehicle with the P0AEB code present, as it may lead to further damage to the hybrid/EV system and potential safety hazards. It is advisable to address the issue promptly.

5. What are the repair options for resolving the OBDII code P0AEB in a 2018 GMC Sierra Hybrid/EV?

Repair options for code P0AEB may include replacing the Hybrid/EV Battery Temperature Sensor 4, repairing any damaged wiring or connections, resetting the fault code, and conducting thorough testing to ensure the issue is resolved.

6. Are there any DIY tips for addressing the Hybrid/EV Battery Temperature Sensor 4 Circuit High Voltage issue in my 2018 GMC Sierra?

While some basic diagnostics can be done by DIY enthusiasts, addressing the P0AEB code may require specialized tools and expertise. It is recommended to consult a qualified mechanic or dealership for proper diagnosis and repair.

7. Is the OBDII code P0AEB a serious issue in a 2018 GMC Sierra Hybrid/EV?

The P0AEB code should be taken seriously, as it indicates a potential problem with the Hybrid/EV Battery Temperature Sensor 4 Circuit that can affect the performance and safety of the vehicle's hybrid/EV system.

8. How much does it typically cost to repair the OBDII code P0AEB in a 2018 GMC Sierra Hybrid/EV?

The cost of repairing the P0AEB code can vary depending on the exact cause of the issue, the parts needed for replacement, and the labor rates of the service provider. It is advisable to obtain quotes from different mechanics or dealerships.

9. Can the OBDII code P0AEB be a recurring issue in a 2018 GMC Sierra Hybrid/EV?

If the root cause of the P0AEB code is not properly addressed during the repair process, it is possible for the issue to recur. Thorough diagnostics and quality repair work can help prevent the problem from reoccurring.

10. Is it necessary to clear the OBDII code P0AEB after repairing the issue in a 2018 GMC Sierra Hybrid/EV?

After repairing the P0AEB code, it is important to clear the code using a scan tool to reset the vehicle's computer system. This step ensures that the repair was successful and allows for proper monitoring of the system for any new issues.