AutoCodes – Buick – P1BE7 Buick

P1BE7 Buick Code - Hybrid/Electric Vehicle Battery 87 Circuit Performance

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: P1BE7 Buick indicates Hybrid/Electric Vehicle Battery 87 Circuit Performance.
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 693

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 P1BE7 Buick 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 P1BE7 Buick - Hybrid/Electric Vehicle Battery 87 Circuit Performance - AutoCodes.com — P1BE7 Buick Code - Hybrid/Electric Vehicle Battery 87 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BE7 Buick?

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

How to Fix the DTC P1BE7 Buick?

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 P1BE7 Buick 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 P1BE7 Buick Code

1. What are common symptoms of OBDII code P1BE7 in a Buick Hybrid/Electric Vehicle?

- Common symptoms include reduced fuel efficiency, diminished battery performance, and potential issues with the vehicle's hybrid/electric system.

2. What could cause the OBDII code P1BE7 to appear in a Buick Hybrid/Electric Vehicle?

- The code may be triggered by a faulty hybrid/electric vehicle battery 87 circuit, issues with battery connections, or internal battery problems.

3. How can I diagnose the OBDII code P1BE7 in my Buick Hybrid/Electric Vehicle?

- Diagnosis typically involves using a scan tool to read the code, checking the hybrid/electric system for any visible damage, and testing the battery 87 circuit for proper function.

4. What are some repair tips for addressing OBDII code P1BE7 in a Buick Hybrid/Electric Vehicle?

- Repair tips may include checking and repairing damaged wiring, replacing faulty battery components, ensuring proper battery connections, and resetting the system after repairs.

5. Is it safe to continue driving my Buick Hybrid/Electric Vehicle with the OBDII code P1BE7 present?

- It is recommended to address the issue promptly to prevent further damage to the hybrid/electric system and ensure optimal vehicle performance and efficiency.

6. Can a DIY enthusiast repair OBDII code P1BE7 in a Buick Hybrid/Electric Vehicle?

- While some basic troubleshooting and repairs can be done by DIY enthusiasts, complex issues related to the hybrid/electric system may require professional expertise.

7. How much does it typically cost to repair OBDII code P1BE7 in a Buick Hybrid/Electric Vehicle?

- The cost of repairs can vary depending on the specific issue causing the code, the extent of damage, and whether new parts are needed. It is recommended to obtain estimates from qualified technicians.

8. Will resetting the OBDII code P1BE7 in my Buick Hybrid/Electric Vehicle make it go away permanently?

- Resetting the code may clear it temporarily, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause of the problem.

9. Are there any preventive measures to avoid OBDII code P1BE7 in a Buick Hybrid/Electric Vehicle?

- Regular maintenance of the hybrid/electric system, checking battery health, and addressing any warning signs promptly can help prevent issues leading to the P1BE7 code.

10. How long does it typically take to repair OBDII code P1BE7 in a Buick Hybrid/Electric Vehicle?

- The repair time can vary based on the complexity of the issue, availability of parts, and the technician's expertise. Simple fixes may take a few hours, while more involved repairs could take longer.