AutoCodes – Chevrolet – P0B41 Chevrolet

P0B41 Chevrolet Code - Hybrid/Electric Vehicle Battery 2 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: P0B41 Chevrolet indicates Hybrid/Electric Vehicle Battery 2 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 1,061

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 P0B41 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 P0B41 Chevrolet - Hybrid/Electric Vehicle Battery 2 Circuit Performance - AutoCodes.com — P0B41 Chevrolet Code - Hybrid/Electric Vehicle Battery 2 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0B41 Chevrolet?

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

How to Fix the DTC P0B41 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 P0B41 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 P0B41 Chevrolet Code

1. What does the OBDII code P0B41 mean on a Chevrolet?

P0B41 indicates a performance issue with the Hybrid/Electric Vehicle Battery 2 Circuit, typically related to voltage, communication, or functionality problems within the battery or its associated components.

2. What are the common symptoms of code P0B41?

Symptoms may include illuminated warning lights (such as the check engine light or hybrid system warning), reduced vehicle performance, decreased fuel efficiency, or issues with charging and discharging the hybrid battery.

3. What causes the P0B41 code to appear?

Common causes include faulty hybrid battery modules, damaged wiring or connectors in the battery circuit, issues with the hybrid battery control module, or software glitches in the vehicle's control systems.

4. Can I drive my Chevrolet with the P0B41 code?

While the vehicle may still be drivable, itâ€™s not recommended, as the issue can lead to reduced efficiency, potential damage to the hybrid battery system, and further complications if not addressed promptly.

5. How is the P0B41 code diagnosed?

A technician will use a scan tool to retrieve codes and data, inspect the hybrid battery and its circuit for damage or wear, and test the voltage and resistance of the battery components to identify the root cause.

6. What repairs can fix the P0B41 code?

Repairs may involve replacing faulty battery modules, repairing or replacing damaged wiring and connectors, reprogramming or replacing the hybrid battery control module, or addressing any related software issues.

7. How much does it cost to repair a P0B41 code on a Chevrolet?

Repair costs can vary widely depending on the specific issue, but replacing a hybrid battery module or control unit can range from several hundred to a few thousand dollars.

8. Can a weak 12-volt battery trigger the P0B41 code?

While unlikely, a weak or failing 12-volt auxiliary battery can sometimes cause issues in the vehicleâ€™s electrical system, potentially leading to hybrid-related codes, including P0B41.

9. Does the P0B41 code mean the entire hybrid battery needs replacement?

Not necessarily. The issue may be isolated to a single module, wiring, or control component rather than the entire hybrid battery pack.

10. How can I prevent the P0B41 code from reoccurring?

Regular maintenance, ensuring proper operation of the hybrid battery cooling system, inspecting electrical connections for corrosion or damage, and addressing minor issues early can help prevent recurrence.