AutoCodes – GMC – P1BF2 GMC

P1BF2 GMC Code - Hybrid/Electric Vehicle Battery 90 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: P1BF2 GMC indicates Hybrid/Electric Vehicle Battery 90 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 732

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 P1BF2 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 P1BF2 GMC - Hybrid/Electric Vehicle Battery 90 Circuit High Voltage - AutoCodes.com — P1BF2 GMC Code - Hybrid/Electric Vehicle Battery 90 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BF2 GMC?

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

How to Fix the DTC P1BF2 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 P1BF2 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 P1BF2 GMC Code

1. What are the common symptoms of OBDII code P1BF2 GMC related to Hybrid/Electric Vehicle Battery 90 Circuit High Voltage?

- Common symptoms include the check engine light coming on, reduced vehicle performance, and potential issues with the hybrid/electric system.

2. What are some possible causes of OBDII code P1BF2 GMC indicating Hybrid/Electric Vehicle Battery 90 Circuit High Voltage?

- Possible causes may include a faulty high-voltage battery, damaged wiring or connectors, or issues with the battery management system.

3. How can I diagnose the OBDII code P1BF2 GMC for Hybrid/Electric Vehicle Battery 90 Circuit High Voltage?

- Diagnosing this code typically involves using a professional OBDII scanner to retrieve the specific fault codes and conducting further testing on the high-voltage battery and related components.

4. Can driving with OBDII code P1BF2 GMC present any risks to the vehicle or driver?

- Driving with this code can potentially lead to further damage to the high-voltage system, reduced fuel efficiency, and potentially unsafe driving conditions in some cases.

5. Are there any safety precautions to consider when dealing with OBDII code P1BF2 GMC and the high-voltage system?

- It is crucial to follow proper safety procedures when working on the high-voltage system, including wearing appropriate personal protective equipment and following manufacturer guidelines.

6. What are some recommended repair tips for resolving OBDII code P1BF2 GMC related to Hybrid/Electric Vehicle Battery 90 Circuit High Voltage?

- Repair tips may include inspecting and repairing any damaged wiring, replacing the high-voltage battery if necessary, and ensuring all connections are secure and functioning properly.

7. Can OBDII code P1BF2 GMC be reset without addressing the underlying issue with the Hybrid/Electric Vehicle Battery 90 Circuit High Voltage?

- While the code can be cleared using an OBDII scanner, it is essential to address the root cause of the issue to prevent the code from reoccurring and potential further damage.

8. How can a professional mechanic help in diagnosing and repairing OBDII code P1BF2 GMC for Hybrid/Electric Vehicle Battery 90 Circuit High Voltage?

- A professional mechanic can utilize specialized tools and expertise to accurately diagnose the issue, recommend appropriate repairs, and ensure the high-voltage system is safe and functional.

9. Are there any recalls or technical service bulletins related to OBDII code P1BF2 GMC in GMC hybrid/electric vehicles?

- It is recommended to check with GMC dealerships or official sources for any recalls or technical service bulletins specific to this OBDII code and related issues in GMC vehicles.

10. How can regular maintenance and inspections help prevent OBDII code P1BF2 GMC and other high-voltage system issues in hybrid/electric vehicles?

- Regular maintenance, including inspections of the high-voltage system, can help identify potential issues early, prevent failures, and ensure the overall health and performance of the hybrid/electric vehicle.