AutoCodes – GMC – P1BF3 GMC

P1BF3 GMC Code - Hybrid/Electric Vehicle Battery 91 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: P1BF3 GMC indicates Hybrid/Electric Vehicle Battery 91 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 805

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1BF3 GMC 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 P1BF3 GMC - Hybrid/Electric Vehicle Battery 91 Circuit Performance - AutoCodes.com — P1BF3 GMC Code - Hybrid/Electric Vehicle Battery 91 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BF3 GMC?

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

How to Fix the DTC P1BF3 GMC?

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 P1BF3 GMC 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 P1BF3 GMC Code

1. What are the common symptoms of OBDII code P1BF3 GMC related to Hybrid/Electric Vehicle Battery 91 Circuit Performance?

- Common symptoms include decreased fuel efficiency, reduced power output, and potential issues with starting the vehicle.

2. What are the possible causes of OBDII code P1BF3 GMC indicating Hybrid/Electric Vehicle Battery 91 Circuit Performance?

- The code may be triggered by issues such as a faulty battery pack, damaged wiring, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P1BF3 GMC for Hybrid/Electric Vehicle Battery 91 Circuit Performance?

- Diagnosing the code typically involves using a scan tool to read the code, checking the battery voltage levels, inspecting the battery connections, and performing a thorough visual inspection of the battery components.

4. Can I still drive my vehicle with OBDII code P1BF3 GMC related to Hybrid/Electric Vehicle Battery 91 Circuit Performance?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the hybrid or electric system components.

5. How should I repair OBDII code P1BF3 GMC indicating Hybrid/Electric Vehicle Battery 91 Circuit Performance?

- Repairing the code may involve replacing the battery pack, repairing damaged wiring, resetting the battery management system, or seeking assistance from a qualified technician.

6. Are there any safety precautions to consider when dealing with OBDII code P1BF3 GMC for Hybrid/Electric Vehicle Battery 91 Circuit Performance?

- Safety precautions may include disconnecting the battery before performing any repairs, wearing appropriate protective gear, and following manufacturer guidelines for working on hybrid or electric vehicle systems.

7. Is it possible to reset OBDII code P1BF3 GMC for Hybrid/Electric Vehicle Battery 91 Circuit Performance without repairs?

- While clearing the code may temporarily turn off the check engine light, it is important to address the underlying issue causing the code to prevent further problems.

8. How much does it typically cost to repair OBDII code P1BF3 GMC associated with Hybrid/Electric Vehicle Battery 91 Circuit Performance?

- The cost of repairs can vary depending on the extent of the issue, the parts needed, and labor costs. It is advisable to obtain quotes from different repair shops.

9. Can a DIY enthusiast without specialized training fix OBDII code P1BF3 GMC related to Hybrid/Electric Vehicle Battery 91 Circuit Performance?

- Repairing this code may require specialized knowledge and tools related to hybrid or electric vehicle systems. It is recommended to seek professional help for accurate diagnosis and repair.

10. How often does OBDII code P1BF3 GMC for Hybrid/Electric Vehicle Battery 91 Circuit Performance occur in GMC vehicles?

- The occurrence of this specific code can vary depending on the model and year of the GMC vehicle. It is important to address the issue promptly to prevent further damage.