AutoCodes – Chevrolet – P1B64 Chevrolet

P1B64 Chevrolet Code - Hybrid/Electric Vehicle Battery 43 Circuit Low 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: P1B64 Chevrolet indicates Hybrid/Electric Vehicle Battery 43 Circuit Low 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 988

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B64 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 P1B64 Chevrolet - Hybrid/Electric Vehicle Battery 43 Circuit Low Voltage - AutoCodes.com — P1B64 Chevrolet Code - Hybrid/Electric Vehicle Battery 43 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1B64 Chevrolet?

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

How to Fix the DTC P1B64 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 P1B64 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 P1B64 Chevrolet Code

1. What are the common symptoms of OBDII code P1B64 in a Chevrolet hybrid/electric vehicle?

- The common symptoms include decreased battery performance, difficulty starting the vehicle, and a dashboard warning light indicating a low voltage issue.

2. What can cause the OBDII code P1B64 Hybrid/Electric Vehicle Battery 43 Circuit Low Voltage in a Chevrolet vehicle?

- The code P1B64 can be triggered by issues such as a faulty battery cell, a weak battery pack, corroded battery terminals, or a problem with the battery management system.

3. How serious is the OBDII code P1B64 in a Chevrolet hybrid/electric vehicle?

- The code P1B64 indicating low voltage in the battery circuit is a serious issue that can lead to poor vehicle performance and potential safety hazards. It should be addressed promptly.

4. Can I continue driving my Chevrolet hybrid/electric vehicle with the P1B64 code?

- It is not recommended to drive the vehicle with code P1B64 present, as it can lead to further damage to the battery system and potentially leave you stranded.

5. What are some DIY repair tips for the OBDII code P1B64 in a Chevrolet hybrid/electric vehicle?

- DIY repair tips may include checking and cleaning the battery terminals, inspecting the battery pack for visible damage, and ensuring all connections are secure and free of corrosion.

6. How can I reset the OBDII code P1B64 in a Chevrolet hybrid/electric vehicle?

- Resetting the code can be done using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. However, it is important to address the underlying issue causing the code.

7. Is it safe to clear the OBDII code P1B64 in a Chevrolet hybrid/electric vehicle without fixing the problem?

- Clearing the code without addressing the underlying issue can temporarily remove the warning light, but the problem will likely resurface, potentially causing more significant damage.

8. How much does it cost to repair the OBDII code P1B64 in a Chevrolet hybrid/electric vehicle?

- The cost of repairing the P1B64 code can vary depending on the root cause of the issue. It is recommended to consult a professional mechanic for an accurate diagnosis and cost estimate.

9. Can a faulty sensor trigger the OBDII code P1B64 in a Chevrolet hybrid/electric vehicle?

- While a faulty sensor is less common, it can contribute to triggering the P1B64 code. It is essential to have a comprehensive diagnostic to pinpoint the exact cause.

10. What steps should I take if the OBDII code P1B64 persists in my Chevrolet hybrid/electric vehicle after repair attempts?

- If the code continues to appear after repair attempts, it is advisable to seek assistance from a qualified technician who can conduct a thorough diagnosis to identify and resolve the issue.