AutoCodes – Cadillac – P0B41 Cadillac

P0B41 Cadillac 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 Cadillac 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 1,063

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

What does this mean?

What are the Possible Causes of the DTC P0B41 Cadillac?

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

How to Fix the DTC P0B41 Cadillac?

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 Cadillac 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 Cadillac Code

1. What are the common symptoms of OBDII code P0B41 in a Cadillac hybrid/electric vehicle?

- Common symptoms include reduced battery performance, decreased fuel efficiency, and potential issues with the vehicle's hybrid system.

2. What can cause the OBDII code P0B41 to trigger in a Cadillac hybrid/electric vehicle?

- Possible causes include a faulty Hybrid/Electric Vehicle Battery 2, issues with the battery's circuit performance, or problems with the hybrid system components.

3. How can I diagnose the OBDII code P0B41 in my Cadillac hybrid/electric vehicle?

- Diagnosis typically involves using a diagnostic scanner to read the code, checking the Hybrid/Electric Vehicle Battery 2 for any visible damage, and inspecting the related electrical connections.

4. Is it safe to continue driving my Cadillac with the OBDII code P0B41 present?

- It is recommended to have the issue diagnosed and repaired promptly to prevent further damage to the vehicle's hybrid system and ensure optimal performance.

5. Can I repair the OBDII code P0B41 in my Cadillac hybrid/electric vehicle myself?

- While some basic inspections and maintenance tasks can be done by DIY enthusiasts, diagnosing and repairing complex hybrid system issues is best left to qualified professionals.

6. How much does it typically cost to repair the OBDII code P0B41 in a Cadillac hybrid/electric vehicle?

- Repair costs can vary depending on the underlying cause of the issue, but they may range from a few hundred to a few thousand dollars, including parts and labor.

7. Can a faulty Hybrid/Electric Vehicle Battery 2 be repaired, or does it need to be replaced?

- In some cases, certain components of the battery may be repairable, but often it is more cost-effective and reliable to replace the entire Hybrid/Electric Vehicle Battery 2 unit.

8. Will resetting the OBDII code P0B41 make it go away permanently?

- Simply resetting the code without addressing the underlying issue will not resolve the problem permanently. It is important to diagnose and repair the root cause to prevent the code from reappearing.

9. How long does it take to repair the OBDII code P0B41 in a Cadillac hybrid/electric vehicle?

- The repair time can vary depending on the complexity of the issue, availability of parts, and the technician's expertise, but it may take a few hours to a few days to complete the repair.

10. Are there any preventive maintenance tips to avoid triggering the OBDII code P0B41 in a Cadillac hybrid/electric vehicle?

- Regularly inspecting the hybrid system components, following the manufacturer's maintenance schedule, and avoiding extreme driving conditions can help prevent issues that may trigger the code.