AutoCodes – Buick – P0B47 Buick

P0B47 Buick Code - Hybrid/Electric Vehicle Battery 3 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: P0B47 Buick indicates Hybrid/Electric Vehicle Battery 3 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 1,048

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B47 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 P0B47 Buick - Hybrid/Electric Vehicle Battery 3 Circuit Performance - AutoCodes.com — P0B47 Buick Code - Hybrid/Electric Vehicle Battery 3 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B47 Buick?

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

How to Fix the DTC P0B47 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 P0B47 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 P0B47 Buick Code

1. What does the OBDII code P0B47 mean on a Buick?

The P0B47 code indicates a performance issue in the circuit for hybrid or electric vehicle battery pack 3, which may affect the vehicle's high-voltage battery functionality.

2. What are common symptoms of the P0B47 code in a Buick?

Symptoms may include reduced fuel efficiency, limited electric-only driving range, warning lights on the dashboard, and potential loss of hybrid or electric power.

3. What causes the P0B47 code in a Buick?

Common causes include a malfunctioning battery module, damaged wiring or connectors in the battery circuit, or a fault in the battery management system.

4. Can the P0B47 code damage my Buick if left unresolved?

Yes, ignoring this code can lead to further damage to the hybrid battery system, reduced performance, and potential safety issues with the vehicle's electrical system.

5. How is the P0B47 code diagnosed on a Buick?

A technician will use a scan tool to read the code, inspect the battery pack and wiring, and test the battery management system for faults or irregularities.

6. Can I drive my Buick with the P0B47 code active?

Driving with this code is not recommended, as it may compromise vehicle performance and lead to further damage to the hybrid battery system.

7. What repairs are needed to fix the P0B47 code in a Buick?

Repairs may include replacing a faulty battery module, repairing or replacing damaged wiring, or recalibrating the battery management system.

8. How much does it cost to fix the P0B47 code on a Buick?

The cost varies depending on the issue but can range from $500 to $3,000, especially if the battery module needs replacement.

9. Can the P0B47 code be fixed without professional help?

Unless you have expertise in hybrid or electric vehicle systems, this repair is best left to a qualified technician due to the high-voltage components involved.

10. How can I prevent the P0B47 code from reoccurring?

Regular maintenance, ensuring the battery cooling system is functioning properly, and addressing electrical issues promptly can help prevent this code from reappearing.