AutoCodes – Chevrolet – P0B46 Chevrolet

P0B46 Chevrolet Code - Hybrid/Electric Vehicle Battery 3 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: P0B46 Chevrolet indicates Hybrid/Electric Vehicle Battery 3 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 1,058

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 P0B46 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 P0B46 Chevrolet - Hybrid/Electric Vehicle Battery 3 Circuit Performance - AutoCodes.com — P0B46 Chevrolet Code - Hybrid/Electric Vehicle Battery 3 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B46 Chevrolet?

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

How to Fix the DTC P0B46 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 P0B46 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 P0B46 Chevrolet Code

1. What are common symptoms of OBDII code P0B46 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P0B46 Chevrolet Hybrid/Electric Vehicle Battery 3 Circuit Performance indicate?

- This code indicates that there is a performance issue with the battery 3 circuit in the hybrid/electric vehicle.

3. What are possible causes of the P0B46 code in a Chevrolet hybrid/electric vehicle?

- Possible causes include a faulty battery 3 circuit, issues with battery connections, a malfunctioning battery management system, or a problem with the hybrid control module.

4. How can I diagnose the OBDII code P0B46 in my Chevrolet hybrid/electric vehicle?

- Diagnosis typically involves using a scan tool to read the code, inspecting the battery connections, checking the battery voltage levels, and testing the hybrid system components.

5. Can I drive my Chevrolet hybrid/electric vehicle with the P0B46 code present?

- It is not recommended to drive the vehicle with the P0B46 code as it can lead to further damage to the hybrid system and may result in reduced performance and fuel efficiency.

6. What are some repair tips for fixing the P0B46 code in a Chevrolet hybrid/electric vehicle?

- Repair tips may include repairing or replacing faulty battery connections, diagnosing and resolving issues with the battery management system, and resetting the code with a scan tool after repairs are made.

7. How much does it typically cost to repair the P0B46 code in a Chevrolet hybrid/electric vehicle?

- Repair costs can vary depending on the specific issue causing the code, but they may range from a few hundred dollars for simple fixes to over a thousand dollars for more complex repairs involving battery components.

8. Can the P0B46 code be cleared/reset without fixing the underlying issue in a Chevrolet hybrid/electric vehicle?

- While the code can be cleared with a scan tool, it is important to address the underlying issue causing the code to prevent further damage to the hybrid system.

9. Is it possible to prevent the OBDII code P0B46 from appearing in a Chevrolet hybrid/electric vehicle?

- Regular maintenance, including checking and maintaining battery connections, monitoring battery performance, and addressing any warning signs promptly, can help prevent the P0B46 code from appearing.

10. How long does it take to repair the P0B46 code in a Chevrolet hybrid/electric vehicle?

- The repair time can vary based on the specific issue causing the code and the complexity of the repair, but it may take anywhere from a couple of hours to a full day for more involved repairs.