AutoCodes – GMC – P0B64 GMC

P0B64 GMC Code - Hybrid/Electric Vehicle Battery 9 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: P0B64 GMC indicates Hybrid/Electric Vehicle Battery 9 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 709

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 P0B64 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 P0B64 GMC - Hybrid/Electric Vehicle Battery 9 Circuit Performance - AutoCodes.com — P0B64 GMC Code - Hybrid/Electric Vehicle Battery 9 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B64 GMC?

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

How to Fix the DTC P0B64 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 P0B64 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 P0B64 GMC Code

1. What are the common symptoms of OBDII code P0B64 in a GMC hybrid/electric vehicle?

- Common symptoms include reduced hybrid/electric vehicle performance, decreased fuel efficiency, and potential issues with starting the vehicle.

2. What can cause the OBDII code P0B64 in a GMC hybrid/electric vehicle?

- The code P0B64 typically indicates a performance issue with the Hybrid/Electric Vehicle Battery 9 Circuit, which can be caused by a faulty battery cell, damaged wiring, or a malfunctioning battery management system.

3. How can I diagnose the OBDII code P0B64 in my GMC hybrid/electric vehicle?

- Diagnosis of code P0B64 requires specialized equipment and knowledge of hybrid/electric vehicle systems. It is recommended to consult a professional technician with experience in hybrid vehicles for accurate diagnosis.

4. Is it safe to continue driving my GMC hybrid/electric vehicle with the OBDII code P0B64 present?

- It is not recommended to continue driving the vehicle with the code P0B64 present, as it can lead to further damage to the hybrid/electric vehicle system. It is best to have the issue diagnosed and repaired promptly.

5. Can I repair the OBDII code P0B64 in my GMC hybrid/electric vehicle myself?

- Repairing the OBDII code P0B64 in a GMC hybrid/electric vehicle requires specialized knowledge and tools. It is advisable to seek assistance from a qualified technician or dealership experienced in hybrid/electric vehicle repairs.

6. What are some possible repair tips for resolving the OBDII code P0B64 in a GMC hybrid/electric vehicle?

- Repair tips may include checking and repairing damaged wiring, replacing faulty battery cells, recalibrating the battery management system, and ensuring proper connections within the hybrid/electric system.

7. How much does it typically cost to repair the OBDII code P0B64 in a GMC hybrid/electric vehicle?

- The cost of repairing the OBDII code P0B64 can vary depending on the extent of the issue and the specific repairs needed. It is recommended to obtain a diagnosis and cost estimate from a professional technician.

8. Can the OBDII code P0B64 be a recurring issue in a GMC hybrid/electric vehicle?

- The OBDII code P0B64 can be a recurring issue if the underlying cause is not properly addressed. Regular maintenance and monitoring of the hybrid/electric system can help prevent the code from reoccurring.

9. Are there any preventive measures I can take to avoid the OBDII code P0B64 in my GMC hybrid/electric vehicle?

- To prevent the OBDII code P0B64, it is important to follow the manufacturer's recommended maintenance schedule, avoid overloading the hybrid/electric system, and address any issues promptly to prevent further damage.