AutoCodes – GMC – P0B7F GMC

P0B7F GMC Code - Hybrid/Electric Vehicle Battery 14 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: P0B7F GMC indicates Hybrid/Electric Vehicle Battery 14 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 849

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B7F 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 P0B7F GMC - Hybrid/Electric Vehicle Battery 14 Circuit High Voltage - AutoCodes.com — P0B7F GMC Code - Hybrid/Electric Vehicle Battery 14 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0B7F GMC?

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

How to Fix the DTC P0B7F 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 P0B7F 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 P0B7F GMC Code

1. What are the common symptoms of OBDII code P0B7F in a GMC hybrid/electric vehicle?

- Common symptoms include illuminated check engine light, reduced fuel efficiency, and potentially limited hybrid/electric drive functionality.

2. What can cause the OBDII code P0B7F to trigger in a GMC hybrid/electric vehicle?

- The code P0B7F typically indicates a high voltage issue in the Hybrid/Electric Vehicle Battery 14 circuit, which can be caused by a damaged battery pack, faulty wiring, or a malfunctioning battery management system.

3. How serious is the OBDII code P0B7F in a GMC hybrid/electric vehicle?

- The code P0B7F should be taken seriously as it relates to the high voltage system of the vehicle. Continuing to drive with this code present can potentially lead to further damage to the hybrid/electric components.

4. What should I do if my GMC hybrid/electric vehicle displays the OBDII code P0B7F?

- It is recommended to have the vehicle inspected by a qualified technician or dealership as soon as possible to diagnose the specific cause of the code and determine the necessary repairs.

5. Can I continue driving my GMC hybrid/electric vehicle with the OBDII code P0B7F present?

- It is not recommended to continue driving the vehicle with the code P0B7F present, as it may lead to further damage to the high voltage components of the vehicle.

6. How can I repair the OBDII code P0B7F in my GMC hybrid/electric vehicle?

- Repairing the code P0B7F may involve replacing the damaged battery pack, repairing faulty wiring, or recalibrating the battery management system. It is best to consult with a professional for an accurate diagnosis and repair plan.

7. Are there any safety precautions I should take if I suspect a high voltage issue related to the OBDII code P0B7F in my GMC hybrid/electric vehicle?

- It is important to avoid handling any high voltage components yourself and to ensure that qualified technicians with proper training and equipment address the issue to prevent any safety hazards.

8. How much does it cost to repair the OBDII code P0B7F in a GMC hybrid/electric vehicle?

- The cost of repairing the code P0B7F can vary depending on the specific cause of the issue, the extent of the damage, and the labor rates of the repair facility. It is advisable to obtain a few quotes from reputable technicians or dealerships.

9. Can a DIY enthusiast diagnose and repair the OBDII code P0B7F in a GMC hybrid/electric vehicle?

- Due to the complexities of the high voltage system in hybrid/electric vehicles, it is not recommended for DIY enthusiasts to attempt diagnosis or repair of the code P0B7F. Professional expertise is crucial in handling such issues.

10. Will resetting the OBDII code P0B7F in my GMC hybrid/electric vehicle make it go away permanently?

- Simply resetting the code P0B7F may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is crucial to diagnose and repair the root cause of the code for a permanent solution.