AutoCodes – Cadillac – P1E7B Cadillac

P1E7B Cadillac Code - Hybrid/Electric Vehicle Battery 80 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: P1E7B Cadillac indicates Hybrid/Electric Vehicle Battery 80 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 658

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 P1E7B Cadillac 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 P1E7B Cadillac - Hybrid/Electric Vehicle Battery 80 Circuit - AutoCodes.com — P1E7B Cadillac Code - Hybrid/Electric Vehicle Battery 80 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E7B Cadillac?

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

How to Fix the DTC P1E7B Cadillac?

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 P1E7B Cadillac 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 P1E7B Cadillac Code

1. What are the common symptoms of OBDII code P1E7B in a Cadillac Hybrid/Electric Vehicle?

- Common symptoms include reduced battery performance, poor fuel efficiency, and warning lights on the dashboard related to the hybrid or electric system.

2. What does the OBDII code P1E7B indicate in a Cadillac Hybrid/Electric Vehicle?

- This code specifically refers to an issue with the Hybrid/Electric Vehicle Battery 80 Circuit, indicating a problem with the electrical circuit associated with the battery.

3. What are the possible causes of the Hybrid/Electric Vehicle Battery 80 Circuit issue in a Cadillac?

- Potential causes include damaged wiring, faulty battery components, poor connections, or issues with the battery management system.

4. How can I diagnose the Hybrid/Electric Vehicle Battery 80 Circuit problem in my Cadillac?

- Diagnosis typically involves using a diagnostic scanner to retrieve the OBDII code, inspecting the battery connections, checking for visible damage to wiring, and testing the battery components.

5. Is it safe to continue driving my Cadillac with the P1E7B code present?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the electrical system and potentially affect the vehicle's performance and safety.

6. Can I repair the Hybrid/Electric Vehicle Battery 80 Circuit issue in my Cadillac myself?

- Repairing this issue may require advanced electrical knowledge and specialized tools, so it is recommended to seek professional assistance from a certified technician familiar with hybrid/electric vehicles.

7. How much does it typically cost to repair the Hybrid/Electric Vehicle Battery 80 Circuit problem in a Cadillac?

- Repair costs can vary depending on the extent of the issue, parts needed for replacement, and labor rates, but it can range from a few hundred to over a thousand dollars.

8. Are there any maintenance tips to prevent the occurrence of the Hybrid/Electric Vehicle Battery 80 Circuit issue in my Cadillac?

- Regularly inspecting the battery connections, keeping the battery properly charged, and following the manufacturer's maintenance schedule for the hybrid/electric system can help prevent such issues.

9. Can a faulty Hybrid/Electric Vehicle Battery 80 Circuit affect the overall performance of my Cadillac?

- Yes, a malfunctioning circuit can impact the vehicle's fuel efficiency, power delivery, and overall hybrid/electric system operation, leading to decreased performance.

10. How urgent is it to address the Hybrid/Electric Vehicle Battery 80 Circuit problem in my Cadillac?

- It is important to address this issue promptly to prevent further damage to the battery system and ensure the safe and efficient operation of your Cadillac Hybrid/Electric Vehicle.