AutoCodes – Saturn – P0B41 Saturn

P0B41 Saturn 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 Saturn 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 779

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

What does this mean?

What are the Possible Causes of the DTC P0B41 Saturn?

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

How to Fix the DTC P0B41 Saturn?

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 Saturn 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 Saturn Code

1. What does OBDII code P0B41 mean for a Saturn?

Code P0B41 indicates an issue with the performance of the Hybrid/Electric Vehicle Battery 2 Circuit, which could involve voltage discrepancies or communication errors.

2. What are the common symptoms of code P0B41 in a Saturn?

Symptoms may include reduced fuel efficiency, limited electric drive functionality, warning lights on the dashboard, or decreased overall vehicle performance.

3. What causes the P0B41 code to occur?

Common causes include faulty battery modules, wiring issues, connector problems, or a malfunctioning battery management system.

4. Can a weak hybrid battery trigger code P0B41?

Yes, a weak or degraded hybrid battery can cause circuit performance issues, leading to this code.

5. How is code P0B41 diagnosed in a Saturn?

Technicians typically use a scan tool to read battery voltage levels, inspect wiring and connections, and perform tests on the battery management system.

6. Can driving with code P0B41 damage my Saturn?

While the vehicle may still function, driving with this code can lead to further damage to the hybrid system and reduced efficiency.

7. How do I fix code P0B41 in my Saturn?

Repairs may involve replacing the affected battery module, repairing damaged wiring or connectors, or reprogramming the battery management system.

8. How much does it cost to repair code P0B41 in a Saturn?

Costs vary depending on the specific issue but can range from $300 for wiring repairs to over $2,000 for battery replacement.

9. Is code P0B41 exclusive to Saturn hybrid or electric vehicles?

While P0B41 specifically refers to battery circuit performance issues, similar codes may appear in other hybrid or electric vehicles with different naming conventions.

10. Can a software update resolve code P0B41 in a Saturn?

In some cases, a software update for the battery management system can resolve the issue, but hardware problems typically require physical repairs.