AutoCodes – Saturn – P0BB4 Saturn

P0BB4 Saturn Code - Hybrid/Electric Vehicle Battery 25 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: P0BB4 Saturn indicates Hybrid/Electric Vehicle Battery 25 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 775

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 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0BB4 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 P0BB4 Saturn - Hybrid/Electric Vehicle Battery 25 Circuit Performance - AutoCodes.com — P0BB4 Saturn Code - Hybrid/Electric Vehicle Battery 25 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P0BB4 Saturn?

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

How to Fix the DTC P0BB4 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 P0BB4 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 P0BB4 Saturn Code

1. What are the common symptoms of OBDII code P0BB4 in a Saturn Hybrid/Electric Vehicle?

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

2. What could cause the OBDII code P0BB4 in a Saturn Hybrid/Electric Vehicle?

- This code typically indicates a malfunction related to the Hybrid/Electric Vehicle Battery 25 Circuit, which could be caused by wiring issues, battery pack faults, or problems with the battery management system.

3. How can I diagnose the Hybrid/Electric Vehicle Battery 25 Circuit performance issue in my Saturn?

- Diagnosis usually involves conducting a thorough inspection of the battery pack, checking the wiring harness for any damage or loose connections, and using a diagnostic scanner to retrieve specific data related to the battery circuit.

4. Is it safe to continue driving my Saturn with the P0BB4 trouble code present?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the hybrid system components and potentially compromise the safety and performance of the vehicle.

5. Can I reset the OBDII code P0BB4 in my Saturn Hybrid/Electric Vehicle on my own?

- While you can attempt to clear the code using an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

6. What are some repair tips for resolving the Hybrid/Electric Vehicle Battery 25 Circuit performance problem?

- Repair tips may include inspecting and repairing damaged wiring, replacing faulty battery pack components, recalibrating the battery management system, and ensuring all connections are secure.

7. How much does it typically cost to fix the P0BB4 code in a Saturn Hybrid/Electric Vehicle?

- The cost of repair can vary depending on the extent of the issue, parts needed for replacement, and labor charges. It is advisable to consult with a qualified mechanic or dealership for an accurate estimate.

8. Can a DIY enthusiast address the P0BB4 code issue in a Saturn Hybrid/Electric Vehicle?

- While some basic troubleshooting and repairs may be possible for DIY enthusiasts, dealing with complex hybrid/electric vehicle systems like the battery circuit often requires specialized knowledge and tools best handled by professionals.

9. Will fixing the P0BB4 code improve the overall performance of my Saturn Hybrid/Electric Vehicle?

- Yes, resolving the Hybrid/Electric Vehicle Battery 25 Circuit performance issue can help restore optimal performance, fuel efficiency, and the longevity of the vehicle's hybrid system components.

10. How can regular maintenance help prevent the recurrence of the P0BB4 trouble code in a Saturn Hybrid/Electric Vehicle?

- Regularly scheduled maintenance, including battery inspections, system checks, and software updates, can help detect and address potential issues before they trigger the P0BB4 trouble code.