AutoCodes – GMC – P1E7D GMC

P1E7D GMC Code - Hybrid/Electric Vehicle Battery 82 Circuit

Quick Answer

The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. 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: P1E7D GMC indicates Hybrid/Electric Vehicle Battery 82 Circuit.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
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 756

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E7D GMC Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P1E7D GMC - Hybrid/Electric Vehicle Battery 82 Circuit - AutoCodes.com — P1E7D GMC Code - Hybrid/Electric Vehicle Battery 82 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E7D GMC?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P1E7D 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 P1E7D 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.

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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 P1E7D GMC Code

1. What are the common symptoms of OBDII code P1E7D GMC related to the Hybrid/Electric Vehicle Battery 82 Circuit?

The common symptoms include decreased fuel efficiency, loss of power, difficulty starting the vehicle, and the illumination of the check engine light.

2. What are some possible causes of OBDII code P1E7D GMC for the Hybrid/Electric Vehicle Battery 82 Circuit?

Possible causes include a faulty high voltage battery, damaged wiring in the battery circuit, poor electrical connections, or a failing battery management system.

3. How can I diagnose the OBDII code P1E7D GMC for the Hybrid/Electric Vehicle Battery 82 Circuit?

Diagnosis typically involves conducting a thorough inspection of the high voltage battery system, checking for any visible damage or corrosion, testing the battery voltage levels, and using a diagnostic scanner to retrieve specific fault codes.

4. What are the repair options for addressing OBDII code P1E7D GMC related to the Hybrid/Electric Vehicle Battery 82 Circuit?

Repair options may include repairing or replacing damaged wiring, addressing faulty battery cells, recalibrating the battery management system, or replacing the high voltage battery if necessary.

5. Is it safe to continue driving with OBDII code P1E7D GMC related to the Hybrid/Electric Vehicle Battery 82 Circuit?

It is not recommended to continue driving with this code present, as it can lead to further damage to the high voltage battery system and potentially unsafe driving conditions.

6. Can I reset the OBDII code P1E7D GMC for the Hybrid/Electric Vehicle Battery 82 Circuit on my own?

While you can clear the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.

7. How much does it typically cost to repair OBDII code P1E7D GMC for the Hybrid/Electric Vehicle Battery 82 Circuit?

The cost of repair can vary depending on the extent of the damage and the specific components that need to be replaced, but it generally ranges from a few hundred to a few thousand dollars.

8. Are there any maintenance tips to prevent OBDII code P1E7D GMC related to the Hybrid/Electric Vehicle Battery 82 Circuit?

Regularly inspecting the high voltage battery system, following manufacturer-recommended maintenance schedules, and avoiding extreme temperature conditions can help prevent issues leading to this code.

9. Can a DIY enthusiast with basic automotive knowledge attempt to address OBDII code P1E7D GMC for the Hybrid/Electric Vehicle Battery 82 Circuit?

While some basic troubleshooting steps can be taken, addressing this code often requires specialized tools and expertise, so it is recommended to consult with a professional mechanic or dealership.

10. How long does it typically take to repair OBDII code P1E7D GMC for the Hybrid/Electric Vehicle Battery 82 Circuit?

The repair time can vary depending on the complexity of the issue and the availability of parts, but it may take anywhere from a few hours to a few days to fully address the problem.