AutoCodes – GMC – P1EA4 GMC

P1EA4 GMC Code - Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit

Quick Answer

To maintain a similar state of charge on the cell groups, the hybrid/EV powertrain control module 2 looks at the cell group voltages and determines which cell groups need energy removed in order to maintain the battery groups at a similar state of charge. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module 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
P1EA4 GMC indicates Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit.
Common causes
Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module 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 735
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 24, 2020
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Code P1EA4 GMC Description

To maintain a similar state of charge on the cell groups, the hybrid/EV powertrain control module 2 looks at the cell group voltages and determines which cell groups need energy removed in order to maintain the battery groups at a similar state of charge. This is known as cell balancing. There is a resistor wired in parallel with the cell group and a transistor switch in series with the resistor internal to the hybrid/EV battery interface control module. The hybrid/EV powertrain control module 2 sends a command to the hybrid/EV battery energy control module to begin cell balancing through the hybrid/EV battery interface control modules.
OBDII Code P1EA4 GMC - Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit - AutoCodes.com
P1EA4 GMC Code - Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit

What are the Possible Causes of the DTC P1EA4 GMC?

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

How to Fix the DTC P1EA4 GMC?

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 P1EA4 GMC 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 P1EA4 GMC code?

Need more information on how to fix the P1EA4 GMC 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 P1EA4 GMC Code

1. What are the common symptoms of OBDII code P1EA4 GMC related to the Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit?

The common symptoms include reduced hybrid/EV performance, decreased fuel efficiency, and potential issues with battery charging.

2. What could cause the OBDII code P1EA4 GMC to trigger for the Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit?

Potential causes include a malfunctioning cell balancing circuit, faulty battery interface control module, wiring issues, or issues with the hybrid/EV battery itself.

3. How serious is the OBDII code P1EA4 GMC related to the Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit?

This code should be addressed promptly as it can lead to decreased performance and efficiency of the hybrid/EV system, potentially causing further damage if left unresolved.

4. Can I continue driving with the OBDII code P1EA4 GMC present?

It is not recommended to continue driving with this code active, as it can impact the overall performance and efficiency of the hybrid/EV system.

5. How can I diagnose and repair the OBDII code P1EA4 GMC for the Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit?

Diagnosis typically involves inspecting the cell balancing circuit, battery interface control module, and related wiring for any faults. Repair may involve replacing the faulty components or addressing any wiring issues.

6. Is it safe to attempt DIY repairs for the OBDII code P1EA4 GMC?

Due to the complexity of hybrid/EV systems and the high voltage nature of the components involved, it is recommended to seek professional help for diagnosing and repairing this code.

7. Can a low battery state of charge trigger the OBDII code P1EA4 GMC?

Yes, a low battery state of charge can potentially trigger this code as it may impact the functionality of the cell balancing circuit and the battery interface control module.

8. How often should the Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit be inspected for potential issues?

Regular maintenance and inspection of the hybrid/EV battery system, including the cell balancing circuit, is recommended as part of routine service intervals to prevent issues like the OBDII code P1EA4 GMC.

9. Are there any recalls or technical service bulletins related to the OBDII code P1EA4 GMC for the Hybrid/EV Battery Interface Control Module 4 Cell Balancing Circuit?

It is advisable to check with your GMC dealership or online resources for any relevant recalls or technical service bulletins related to this OBDII code to see if there are known issues or remedies provided by the manufacturer.

10. How can I prevent the OBDII code P1EA4 GMC from occurring in the future?

Regularly maintaining the hybrid/EV battery system, ensuring proper charging habits, and addressing any warning signs promptly can help prevent the occurrence of this code in the future.

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