AutoCodes – GMC – P0B63 GMC

P0B63 GMC Code - Hybrid/Electric Vehicle Battery 9 Circuit

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: P0B63 GMC indicates Hybrid/Electric Vehicle Battery 9 Circuit.
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 819

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 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0B63 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 P0B63 GMC - Hybrid/Electric Vehicle Battery 9 Circuit - AutoCodes.com — P0B63 GMC Code - Hybrid/Electric Vehicle Battery 9 Circuit

What does this mean?

What are the Possible Causes of the DTC P0B63 GMC?

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

How to Fix the DTC P0B63 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 P0B63 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 P0B63 GMC Code

1. What are the common symptoms of OBDII code P0B63 in a GMC Hybrid/Electric vehicle?

The common symptoms of code P0B63 include a warning light on the dashboard, reduced hybrid system performance, and potential issues with starting the vehicle.

2. What are the possible causes of OBDII code P0B63 in a GMC hybrid/electric vehicle?

The code P0B63 typically indicates a fault in the Hybrid/Electric Vehicle Battery 9 Circuit, which may be caused by a malfunctioning battery pack, damaged wiring, or a faulty battery control module.

3. How can I diagnose the OBDII code P0B63 in my GMC Hybrid/Electric vehicle?

Diagnosing code P0B63 requires specialized diagnostic equipment that can communicate with the vehicle's hybrid system. It is recommended to seek professional help from a certified technician or dealership.

4. Can I still drive my GMC Hybrid/Electric vehicle with OBDII code P0B63 present?

It is not recommended to drive your vehicle with code P0B63 present, as it can lead to further damage to the hybrid system. It is best to have the issue diagnosed and repaired as soon as possible.

5. How much does it typically cost to repair OBDII code P0B63 in a GMC Hybrid/Electric vehicle?

The cost of repairing code P0B63 can vary depending on the specific cause of the issue. It is advisable to get a professional diagnosis to determine the exact repair needed and associated costs.

6. Are there any DIY repair tips for OBDII code P0B63 in a GMC Hybrid/Electric vehicle?

Due to the complexity of hybrid/electric vehicle systems, DIY repair is not recommended for OBDII code P0B63. It is best to leave the diagnosis and repair to trained professionals.

7. Will resetting the OBDII code P0B63 clear the issue in my GMC Hybrid/Electric vehicle?

Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing code P0B63. It is crucial to address the root cause of the problem through proper diagnosis and repair.

8. Can a faulty Hybrid/Electric Vehicle Battery 9 Circuit affect the overall performance of my GMC Hybrid/Electric vehicle?

Yes, a fault in the Hybrid/Electric Vehicle Battery 9 Circuit can impact the performance and efficiency of the hybrid system, leading to reduced power output and potential drivability issues.

9. How long does it typically take to repair OBDII code P0B63 in a GMC Hybrid/Electric vehicle?

The repair time for code P0B63 can vary depending on the exact cause of the issue and the availability of parts. It is advisable to consult with a professional technician for a more accurate estimate.

10. Is it safe to continue driving my GMC Hybrid/Electric vehicle if code P0B63 appears intermittently?

Even if the warning light for code P0B63 appears intermittently, it is not recommended to ignore the issue and continue driving the vehicle. Seeking professional diagnosis and repair is the best course of action to prevent further damage.