AutoCodes – Generic – P1B6F

P1B6F Code - Hybrid/Electric Vehicle Battery 47 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: P1B6F indicates Hybrid/Electric Vehicle Battery 47 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 1,294

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 P1B6F 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 P1B6F - Hybrid/Electric Vehicle Battery 47 Circuit Performance - AutoCodes.com — P1B6F Code - Hybrid/Electric Vehicle Battery 47 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B6F?

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

How to Fix the DTC P1B6F?

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 P1B6F 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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Need Help with the Code?

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Information for Specific Makes

P1B6F Buick — Hybrid/Electric Vehicle Battery 47 Circuit Performance
P1B6F Cadillac — Hybrid/Electric Vehicle Battery 47 Circuit Performance
P1B6F Chevrolet — Hybrid/Electric Vehicle Battery 47 Circuit Performance
P1B6F GMC — Hybrid/Electric Vehicle Battery 47 Circuit Performance
P1B6F Saturn — Hybrid/Electric Vehicle Battery 47 Circuit Performance

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 P1B6F Code

1. What does the OBDII code P1B6F indicate?

The code P1B6F indicates an issue with the performance of the battery circuit in position 47 of a hybrid or electric vehicle. This could relate to the battery's ability to charge or discharge properly.

2. What are common symptoms of code P1B6F?

Common symptoms include reduced vehicle range, unexpected changes in battery charge levels, the battery management system reporting errors, or the hybrid system operating in a reduced power mode.

3. What can cause the P1B6F code to appear?

Causes might include damaged battery modules, faulty connections or wiring in the battery circuit, problems with the battery management system, or environmental factors like extreme temperatures affecting battery performance.

4. How can I diagnose the P1B6F code in my vehicle?

Diagnosis should start with a visual inspection of the battery modules and connections for any signs of damage or corrosion. Checking the battery's voltage and current output with specialized equipment can also help pinpoint the issue. A scan tool can be used to gather data from the battery management system for further analysis.

5. What are the steps to repair or resolve the OBDII code P1B6F?

Repairing this code may involve replacing damaged battery cells or modules, repairing or replacing faulty wiring, or recalibrating the battery management system. It is often recommended to consult with a professional technician experienced with hybrid or electric vehicles.

6. Is it safe to drive with the P1B6F code?

Driving with this code is not recommended as it could lead to further damage to the battery system or cause the vehicle to switch to a fallback mode where performance is significantly reduced. It's best to address the issue promptly.

7. Will the P1B6F code clear on its own if the issue is resolved?

In most cases, once the underlying issue is fixed, the code will need to be cleared using an OBDII scan tool. However, some vehicles might automatically clear the code after several successful driving cycles once the problem is resolved.

8. What tools are required to diagnose and fix a P1B6F code?

Diagnosis and repair typically require a digital multimeter, a battery tester, an OBDII scanner, and possibly a software tool for interfacing with the vehicleâ€™s battery management system.