AutoCodes – GMC – P1BFB GMC

P1BFB GMC Code - Hybrid/Electric Vehicle Battery 93 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: P1BFB GMC indicates Hybrid/Electric Vehicle Battery 93 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 1,017

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 P1BFB 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 P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage - AutoCodes.com — P1BFB GMC Code - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1BFB GMC?

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

How to Fix the DTC P1BFB 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 P1BFB 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 P1BFB GMC Code

1. What are the common symptoms of OBDII code P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage?

- Common symptoms include the check engine light illuminating, reduced fuel efficiency, and potentially decreased vehicle performance.

2. What are the possible causes of OBDII code P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage?

- Possible causes can include a faulty battery pack, issues with battery management systems, wiring issues, or a malfunctioning high-voltage sensor.

3. How can I diagnose OBDII code P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage?

- Diagnosis typically involves using a diagnostic scanner to read the code, checking the high-voltage battery system for any visible damage, and testing the battery cells and related components.

4. Can I continue driving with OBDII code P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage?

- It is not recommended to continue driving with this code present, as it can potentially lead to further damage to the hybrid/electric vehicle's high-voltage system.

5. What are some repair tips for fixing OBDII code P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage?

- Repair tips may include checking and repairing any damaged wiring, replacing faulty battery components, resetting the code, and ensuring proper connection of high-voltage systems.

6. Is it safe to attempt repairs on the high-voltage system related to OBDII code P1BFB GMC?

- Repairs involving the high-voltage system should be handled by trained professionals due to the potentially dangerous nature of high-voltage systems in hybrid/electric vehicles.

7. How much does it typically cost to repair OBDII code P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage?

- Repair costs can vary depending on the specific issue causing the code, but it is important to budget for potential high costs due to the complexity of hybrid/electric vehicle systems.

8. Are there any preventive measures to avoid OBDII code P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage?

- Regular maintenance of the high-voltage system, monitoring battery health, and addressing any warning signs promptly can help prevent issues that trigger this code.

9. Can OBDII code P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage be a false alarm?

- While it is possible for the code to be triggered by a temporary glitch, it is essential to investigate the underlying cause to prevent potential risks associated with high-voltage systems.

10. How long does it take to resolve OBDII code P1BFB GMC - Hybrid/Electric Vehicle Battery 93 Circuit High Voltage?

- The time needed to resolve this code can vary depending on the complexity of the issue, availability of parts, and the expertise of the technician working on the vehicle.