AutoCodes – Buick – P1BE9 Buick

P1BE9 Buick Code - Hybrid/Electric Vehicle Battery 87 Circuit High 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: P1BE9 Buick indicates Hybrid/Electric Vehicle Battery 87 Circuit High 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 717

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 P1BE9 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 P1BE9 Buick - Hybrid/Electric Vehicle Battery 87 Circuit High Voltage - AutoCodes.com — P1BE9 Buick Code - Hybrid/Electric Vehicle Battery 87 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BE9 Buick?

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

How to Fix the DTC P1BE9 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 P1BE9 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 P1BE9 Buick Code

1. What are common symptoms of OBDII code P1BE9 in a Buick hybrid/electric vehicle?

- Common symptoms include reduced fuel efficiency, loss of power, and warning lights on the dashboard related to the hybrid/electric system.

2. What does the OBDII code P1BE9 in a Buick hybrid/electric vehicle indicate?

- The code P1BE9 indicates an issue with the Hybrid/Electric Vehicle Battery 87 Circuit High Voltage.

3. What are possible causes of OBDII code P1BE9 in a Buick hybrid/electric vehicle?

- Possible causes include a malfunctioning high voltage circuit, faulty battery components, wiring issues, or a problem with the battery management system.

4. How can I diagnose the OBDII code P1BE9 in my Buick hybrid/electric vehicle?

- Diagnosis typically involves using a scan tool to read the code, inspecting the high voltage circuit, checking battery connections, and testing the battery components for proper function.

5. Are there any safety precautions to keep in mind when dealing with OBDII code P1BE9 in a Buick hybrid/electric vehicle?

- Yes, always follow manufacturer safety guidelines when working on high voltage systems. Ensure the vehicle is properly powered down and take necessary precautions to avoid electrical shocks.

6. Can I drive my Buick hybrid/electric vehicle with the OBDII code P1BE9 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid/electric system and potentially compromise safety.

7. How can I reset the OBDII code P1BE9 in my Buick hybrid/electric vehicle?

- Resetting the code typically involves using a scan tool to clear the code after addressing the underlying issue causing the fault.

8. Is it possible to repair OBDII code P1BE9 in a Buick hybrid/electric vehicle on my own?

- While some basic inspections and checks can be done by DIY enthusiasts, diagnosing and repairing high voltage system issues should be left to trained professionals due to safety concerns.

9. What are the potential consequences of ignoring OBDII code P1BE9 in a Buick hybrid/electric vehicle?

- Ignoring this code can lead to further damage to the hybrid/electric system, reduced vehicle performance, and potential safety hazards due to high voltage issues.

10. How much does it typically cost to repair OBDII code P1BE9 in a Buick hybrid/electric vehicle?

- Repair costs can vary depending on the specific issue causing the fault, but repairs related to the Hybrid/Electric Vehicle Battery 87 Circuit High Voltage can range from a few hundred to over a thousand dollars.