AutoCodes – Buick – P1BBE Buick

P1BBE Buick Code - Hybrid/Electric Vehicle Battery 73 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: P1BBE Buick indicates Hybrid/Electric Vehicle Battery 73 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 912

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1BBE 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 P1BBE Buick - Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage - AutoCodes.com — P1BBE Buick Code - Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1BBE Buick?

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

How to Fix the DTC P1BBE 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 P1BBE 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 P1BBE Buick Code

1. What are the common symptoms of OBDII code P1BBE in a Buick Hybrid/Electric Vehicle?

- Common symptoms include reduced power, poor fuel economy, and potential drivability issues.

2. What does the OBDII code P1BBE indicate regarding the Hybrid/Electric Vehicle Battery 73 Circuit Low Voltage?

- This code indicates that there is a low voltage condition in the battery circuit 73 of a Buick hybrid or electric vehicle.

3. What are the possible causes of OBDII code P1BBE in a Buick Hybrid/Electric Vehicle?

- Possible causes include a faulty battery pack, damaged wiring, loose connections, or a malfunctioning battery management system.

4. How can I diagnose the OBDII code P1BBE in my Buick Hybrid/Electric Vehicle?

- Diagnosis typically involves checking the battery voltage, inspecting the wiring harness, and using a diagnostic scanner to retrieve specific battery data.

5. Is it safe to continue driving with the OBDII code P1BBE present in a Buick Hybrid/Electric Vehicle?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the battery system and potentially affect vehicle performance.

6. Can I reset the OBDII code P1BBE in my Buick Hybrid/Electric Vehicle myself?

- While you can clear the code with an OBDII scanner, it is important to address the underlying issue causing the low voltage condition to prevent the code from reappearing.

7. What are some repair tips for fixing OBDII code P1BBE in a Buick Hybrid/Electric Vehicle?

- Repair tips may include checking and tightening connections, inspecting and repairing damaged wiring, or replacing the battery pack if necessary.

8. How much does it typically cost to repair OBDII code P1BBE in a Buick Hybrid/Electric Vehicle?

- Repair costs can vary depending on the specific issue causing the low voltage condition, but it is advisable to consult a professional technician for an accurate estimate.

9. Can a DIY enthusiast with automotive knowledge fix OBDII code P1BBE in a Buick Hybrid/Electric Vehicle?

- While some basic troubleshooting can be done by DIY enthusiasts, complex battery system repairs may require specialized tools and expertise best handled by professionals.

10. How can I prevent OBDII code P1BBE from occurring in my Buick Hybrid/Electric Vehicle?

- Regularly inspecting the battery system, maintaining proper charging habits, and addressing any warning signs promptly can help prevent the occurrence of this code.