AutoCodes – GMC – P0B7D GMC

P0B7D GMC Code - Hybrid/Electric Vehicle Battery 14 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: P0B7D GMC indicates Hybrid/Electric Vehicle Battery 14 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 995

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 P0B7D 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 P0B7D GMC - Hybrid/Electric Vehicle Battery 14 Circuit Performance - AutoCodes.com — P0B7D GMC Code - Hybrid/Electric Vehicle Battery 14 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B7D GMC?

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

How to Fix the DTC P0B7D 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 P0B7D 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 P0B7D GMC Code

1. What are the common symptoms of OBDII code P0B7D in a GMC hybrid/electric vehicle?

- Common symptoms include poor fuel efficiency, reduced power, and potential issues with the battery system.

2. What are possible causes of the OBDII code P0B7D related to Hybrid/Electric Vehicle Battery 14 Circuit Performance in a GMC vehicle?

- Possible causes may include faulty battery cells, a malfunctioning battery management system, or issues with the high-voltage circuitry.

3. How can I diagnose the OBDII code P0B7D in my GMC hybrid/electric vehicle?

- Diagnosis typically involves using a specialized OBDII scanner to read the code, as well as conducting a thorough inspection of the battery system and related components.

4. What repairs may be needed to address the OBDII code P0B7D in a GMC hybrid/electric vehicle?

- Repairs may involve replacing defective battery cells, repairing or reprogramming the battery management system, or addressing any issues with the high-voltage circuit.

5. Are there any safety precautions to consider when working on the hybrid/electric vehicle battery system related to code P0B7D?

- Yes, it is crucial to follow proper safety protocols when working on high-voltage systems, including disconnecting the power source and wearing appropriate personal protective equipment.

6. Can the OBDII code P0B7D in a GMC hybrid/electric vehicle be cleared/reset, or does it require immediate attention?

- The code can be cleared, but it is important to address the underlying issue causing the code to prevent further problems with the vehicle's performance and safety.

7. How often should the hybrid/electric vehicle battery system be inspected to prevent the occurrence of OBDII code P0B7D?

- It is recommended to have the battery system inspected regularly as part of routine maintenance to catch any potential issues early and prevent the code from appearing.

8. Will driving with the OBDII code P0B7D in a GMC hybrid/electric vehicle cause further damage?

- Continuing to drive with the code present may lead to decreased performance and potential damage to other components in the vehicle, so it is best to address the issue promptly.

9. Are there any DIY tips for troubleshooting the OBDII code P0B7D in a GMC hybrid/electric vehicle?

- While basic checks like inspecting for loose connections or damaged wiring may be done, diagnosing and repairing issues related to the hybrid/electric battery system are best left to professionals.

10. Can a GMC dealership or specialized hybrid/electric vehicle repair shop help with diagnosing and repairing the OBDII code P0B7D?

- Yes, seeking assistance from experienced technicians at a GMC dealership or a specialized hybrid/electric vehicle repair shop is recommended for accurate diagnosis and proper repair of the code.