AutoCodes – Buick – P1B6C Buick

P1B6C Buick Code - Hybrid/Electric Vehicle Battery 46 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: P1B6C Buick indicates Hybrid/Electric Vehicle Battery 46 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 745

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 P1B6C 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 P1B6C Buick - Hybrid/Electric Vehicle Battery 46 Circuit Performance - AutoCodes.com — P1B6C Buick Code - Hybrid/Electric Vehicle Battery 46 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B6C Buick?

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

How to Fix the DTC P1B6C 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 P1B6C 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 P1B6C Buick Code

1. What are common symptoms of OBDII code P1B6C in a Buick Hybrid/Electric Vehicle?

- Common symptoms include poor fuel efficiency, reduced power, and potential issues with the hybrid/electric battery system.

2. What could cause the OBDII code P1B6C in a Buick Hybrid/Electric Vehicle?

- The code P1B6C typically indicates a performance issue in the Hybrid/Electric Vehicle Battery 46 circuit, which could be caused by a faulty battery cell, wiring issue, or battery management system malfunction.

3. How serious is OBDII code P1B6C in a Buick Hybrid/Electric Vehicle?

- This code should be addressed promptly as it can affect the overall performance and efficiency of the hybrid/electric vehicle. Ignoring the issue may lead to further complications with the battery system.

4. Can I continue to drive my Buick with the P1B6C code present?

- It is not recommended to continue driving the vehicle with the P1B6C code present, as it can potentially cause damage to the hybrid/electric battery system and lead to more expensive repairs.

5. How can I diagnose and repair OBDII code P1B6C in my Buick Hybrid/Electric Vehicle?

- Diagnosis typically involves checking the battery system components, wiring, and the battery management system using specialized diagnostic tools. Repair may involve replacing faulty battery cells, repairing wiring issues, or reprogramming the battery management system.

6. Can a DIY enthusiast fix the OBDII code P1B6C issue in a Buick Hybrid/Electric Vehicle?

- Due to the complexity of hybrid/electric vehicle systems, it is recommended to seek professional help or assistance from a qualified technician to diagnose and repair the P1B6C code properly.

7. How much does it cost to repair OBDII code P1B6C in a Buick Hybrid/Electric Vehicle?

- The cost of repair can vary depending on the underlying cause of the code and the extent of the damage. It is advisable to get a diagnostic assessment from a dealership or reputable auto repair shop for an accurate estimate.

8. Is the OBDII code P1B6C specific to Buick vehicles only?

- The P1B6C code is specific to Buick Hybrid/Electric Vehicles and relates to the Hybrid/Electric Vehicle Battery 46 circuit performance. Other vehicle manufacturers may have different codes for similar issues.

9. How often does the OBDII code P1B6C occur in Buick Hybrid/Electric Vehicles?

- The occurrence of the P1B6C code can vary depending on factors such as vehicle age, maintenance history, and driving conditions. Regular maintenance and monitoring of the hybrid/electric system can help prevent this code from occurring.

10. Can the OBDII code P1B6C cause other problems in a Buick Hybrid/Electric Vehicle?

- If left unresolved, the P1B6C code can potentially lead to more severe issues with the hybrid/electric battery system, affecting overall vehicle performance and reliability. It is important to address this code promptly to prevent further complications.