AutoCodes – Buick – P1BB3 Buick

P1BB3 Buick Code - Hybrid/Electric Vehicle Battery 69 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: P1BB3 Buick indicates Hybrid/Electric Vehicle Battery 69 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 781

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 P1BB3 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 P1BB3 Buick - Hybrid/Electric Vehicle Battery 69 Circuit High Voltage - AutoCodes.com — P1BB3 Buick Code - Hybrid/Electric Vehicle Battery 69 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BB3 Buick?

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

How to Fix the DTC P1BB3 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 P1BB3 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 P1BB3 Buick Code

1. What are the common symptoms of OBDII code P1BB3 in a Buick Hybrid/Electric Vehicle?

- Common symptoms include the check engine light illuminating, reduced engine power, and potential issues with the hybrid/electric battery system.

2. What are the possible causes of OBDII code P1BB3 in a Buick Hybrid/Electric Vehicle?

- Possible causes can include a faulty battery pack, high voltage wiring issues, sensor malfunctions, or problems with the battery control module.

3. How can I diagnose the OBDII code P1BB3 in my Buick Hybrid/Electric Vehicle?

- Diagnosis typically involves using a professional OBDII scanner to read the code, inspecting the high voltage wiring, checking battery connections, and testing sensors within the battery system.

4. Is it safe to drive my Buick Hybrid/Electric Vehicle with OBDII code P1BB3 present?

- It is not recommended to drive the vehicle with this code present, as it can indicate potential high voltage issues that may pose safety risks and could lead to further damage.

5. Can I reset the OBDII code P1BB3 in my Buick Hybrid/Electric Vehicle on my own?

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

6. How much does it typically cost to repair OBDII code P1BB3 in a Buick Hybrid/Electric Vehicle?

- Repair costs can vary depending on the specific issue causing the code, but it is advisable to budget for potential battery pack replacements or wiring repairs, which can be expensive.

7. Are there any common DIY fixes for OBDII code P1BB3 in a Buick Hybrid/Electric Vehicle?

- DIY fixes for this code are limited due to the complexities of hybrid/electric vehicle systems. It is best to have the vehicle inspected by a qualified technician.

8. What precautions should I take when working with high voltage systems related to OBDII code P1BB3 in a Buick Hybrid/Electric Vehicle?

- Always follow manufacturer guidelines, wear appropriate safety gear, and consider seeking professional help when dealing with high voltage components to avoid accidents or injuries.

9. Can OBDII code P1BB3 in a Buick Hybrid/Electric Vehicle affect the vehicle's overall performance?

- Yes, this code can impact the vehicle's performance by triggering reduced power modes or causing the vehicle to enter a safe mode to prevent further damage.

10. How often should I have the high voltage system checked in my Buick Hybrid/Electric Vehicle to prevent OBDII code P1BB3 from recurring?

- It is recommended to have the high voltage system inspected regularly as part of routine maintenance to detect any potential issues early and prevent the code from reappearing.