AutoCodes – Generic – P1E7D

P1E7D 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 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 1,321

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

What does this mean?

What are the Possible Causes of the DTC P1E7D?

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

How to Fix the DTC P1E7D?

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 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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Information for Specific Makes

P1E7D Buick — Hybrid/Electric Vehicle Battery 82 Circuit
P1E7D Cadillac — Hybrid/Electric Vehicle Battery 82 Circuit
P1E7D Chevrolet — Hybrid/Electric Vehicle Battery 82 Circuit
P1E7D GMC — Hybrid/Electric Vehicle Battery 82 Circuit
P1E7D Saturn — Hybrid/Electric Vehicle Battery 82 Circuit

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 Code

1. What are common symptoms of OBDII code P1E7D (Hybrid/Electric Vehicle Battery 82 Circuit)?

- Common symptoms include reduced hybrid/electric vehicle performance, decreased fuel efficiency, and potential warning lights on the dashboard.

2. What are possible causes of OBDII code P1E7D (Hybrid/Electric Vehicle Battery 82 Circuit)?

- Possible causes may include a faulty battery 82 circuit, damaged wiring or connectors in the battery system, or issues with the battery management system.

3. How can I diagnose OBDII code P1E7D (Hybrid/Electric Vehicle Battery 82 Circuit) at home?

- You can start by checking the battery 82 circuit for any visible damage or corrosion, inspecting the wiring and connectors for any issues, and using a multimeter to test the circuit's voltage.

4. Is it safe to continue driving with OBDII code P1E7D (Hybrid/Electric Vehicle Battery 82 Circuit) present?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the hybrid/electric vehicle system and potential safety risks.

5. Can I reset OBDII code P1E7D (Hybrid/Electric Vehicle Battery 82 Circuit) using a diagnostic tool?

- While you can clear the code with a diagnostic tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

6. What are the potential repair options for OBDII code P1E7D (Hybrid/Electric Vehicle Battery 82 Circuit)?

- Repair options may involve repairing or replacing the battery 82 circuit, fixing any damaged wiring or connectors, or recalibrating the battery management system.

7. Are there any common DIY fixes for OBDII code P1E7D (Hybrid/Electric Vehicle Battery 82 Circuit)?

- DIY fixes may include checking and tightening loose connections, cleaning corroded terminals, and inspecting the battery system for any visible issues.

8. How much does it typically cost to repair OBDII code P1E7D (Hybrid/Electric Vehicle Battery 82 Circuit) at a professional auto repair shop?

- The cost of repairing this code can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a faulty Hybrid/Electric Vehicle Battery 82 Circuit cause other related OBDII codes to appear?

- Yes, a fault in the battery 82 circuit can potentially trigger other related OBDII codes related to the hybrid/electric vehicle system, so it's important to address the issue promptly.

10. Is it recommended to seek professional help for diagnosing and repairing OBDII code P1E7D (Hybrid/Electric Vehicle Battery 82 Circuit)?

- Due to the complexity of hybrid/electric vehicle systems, it is often recommended to consult a professional technician with experience in these systems for accurate diagnosis and repair of this code.