AutoCodes – Buick – P1BE8 Buick

P1BE8 Buick Code - Hybrid/Electric Vehicle Battery 87 Circuit Low Voltage

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: P1BE8 Buick indicates Hybrid/Electric Vehicle Battery 87 Circuit Low Voltage.
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 817

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 P1BE8 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 P1BE8 Buick - Hybrid/Electric Vehicle Battery 87 Circuit Low Voltage - AutoCodes.com — P1BE8 Buick Code - Hybrid/Electric Vehicle Battery 87 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BE8 Buick?

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

How to Fix the DTC P1BE8 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 P1BE8 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 P1BE8 Buick Code

1. What are common symptoms of OBDII code P1BE8 in a Buick Hybrid/Electric Vehicle?

- Common symptoms include reduced power, poor fuel efficiency, and potential issues with starting the vehicle.

2. What causes the OBDII code P1BE8 indicating Hybrid/Electric Vehicle Battery 87 Circuit Low Voltage in a Buick?

- This code is typically triggered by low voltage in the hybrid/electric vehicle battery 87 circuit, which could be caused by a faulty battery, damaged wiring, or a malfunctioning battery management system.

3. How serious is the OBDII code P1BE8 in a Buick Hybrid/Electric Vehicle?

- This code should be addressed promptly as it can lead to performance issues and potential damage to the vehicle's electrical system if left unresolved.

4. Can I drive my Buick Hybrid/Electric Vehicle with the OBDII code P1BE8 present?

- It is not recommended to continue driving the vehicle with this code present, as it may lead to further damage and potentially leave you stranded.

5. What are some DIY repair tips for addressing the OBDII code P1BE8 in a Buick Hybrid/Electric Vehicle?

- Check the battery connections for any loose or corroded terminals, inspect the wiring for any visible damage, and ensure the battery is in good condition. If you are not experienced with automotive electrical systems, it is best to seek professional assistance.

6. Is it safe to reset the OBDII code P1BE8 in a Buick Hybrid/Electric Vehicle using a diagnostic tool?

- While clearing the code with a diagnostic tool may temporarily turn off the warning light, it is important to address the underlying issue causing the code to prevent further problems.

7. How much does it typically cost to repair the OBDII code P1BE8 in a Buick Hybrid/Electric Vehicle?

- The cost of repair can vary depending on the root cause of the issue. It is advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.

8. What are the potential risks of ignoring the OBDII code P1BE8 in a Buick Hybrid/Electric Vehicle?

- Ignoring this code can lead to further damage to the vehicle's electrical system, reduced performance, and potentially a complete failure of the hybrid/electric system.

9. Does the OBDII code P1BE8 affect the overall drivability of a Buick Hybrid/Electric Vehicle?

- Yes, this code can affect the drivability by causing power loss, reduced fuel efficiency, and other performance issues.

10. Can a generic OBDII scanner be used to diagnose the OBDII code P1BE8 in a Buick Hybrid/Electric Vehicle?

- While a generic OBDII scanner may read the code, it is recommended to use a scanner that is capable of accessing manufacturer-specific codes and data for a more accurate diagnosis.