AutoCodes – Chevrolet – P0B64 Chevrolet

P0B64 Chevrolet 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 Chevrolet 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 888

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

What does this mean?

What are the Possible Causes of the DTC P0B64 Chevrolet?

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

How to Fix the DTC P0B64 Chevrolet?

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 Chevrolet 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 Chevrolet Code

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

- Reduced hybrid system performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What could be causing the OBDII code P0B64 to appear in a Chevrolet hybrid/electric vehicle?

- Possible causes include issues with the high voltage battery, hybrid battery pack, battery control module, or related wiring.

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

- A thorough inspection of the high voltage battery system, checking for loose connections, damaged wiring, or faulty components, is recommended.

4. Can I continue driving my Chevrolet hybrid/electric vehicle with the OBDII code P0B64 present?

- It is advisable to address the issue promptly to prevent further damage to the hybrid system and to ensure optimal vehicle performance.

5. What repairs may be needed to resolve the OBDII code P0B64 in a Chevrolet hybrid/electric vehicle?

- Repairs may involve replacing the high voltage battery, battery control module, or repairing/replacing damaged wiring in the battery system.

6. Is it safe to attempt repairs related to the OBDII code P0B64 in a Chevrolet hybrid/electric vehicle myself?

- Due to the high voltage nature of the hybrid system, it is recommended to seek professional assistance or consult a certified technician for repairs.

7. How can I prevent the recurrence of the OBDII code P0B64 in my Chevrolet hybrid/electric vehicle?

- Regular maintenance of the high voltage battery system, such as inspections and ensuring proper connections, can help prevent this code from reappearing.

8. Are there any specific tools or equipment required to diagnose and repair the OBDII code P0B64 in a Chevrolet hybrid/electric vehicle?

- Specialized diagnostic tools for hybrid vehicles and knowledge of high voltage safety protocols are necessary for proper diagnosis and repair.

9. Can extreme weather conditions impact the occurrence of the OBDII code P0B64 in a Chevrolet hybrid/electric vehicle?

- Yes, extreme temperatures can affect the performance of the high voltage battery system, potentially leading to issues triggering this code.

10. How long does it typically take to resolve the OBDII code P0B64 in a Chevrolet hybrid/electric vehicle?

- The time to resolve this code can vary depending on the specific issue, diagnostic findings, and availability of parts, but it may take a few hours to a couple of days.