AutoCodes – Saturn – P1BB7 Saturn

P1BB7 Saturn Code - Hybrid/Electric Vehicle Battery 71 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: P1BB7 Saturn indicates Hybrid/Electric Vehicle Battery 71 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 919

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1BB7 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 P1BB7 Saturn - Hybrid/Electric Vehicle Battery 71 Circuit Performance - AutoCodes.com — P1BB7 Saturn Code - Hybrid/Electric Vehicle Battery 71 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BB7 Saturn?

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

How to Fix the DTC P1BB7 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 P1BB7 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 P1BB7 Saturn Code

1. What are the common symptoms of OBDII code P1BB7 on a Saturn hybrid/electric vehicle?

- Common symptoms include decreased fuel efficiency, reduced battery performance, and potential drivability issues.

2. What could cause the P1BB7 code to trigger on a Saturn hybrid/electric vehicle?

- The code may be triggered by issues with the hybrid/electric vehicle battery 71 circuit, such as a faulty battery cell or a wiring problem.

3. How can I diagnose the root cause of the P1BB7 code on my Saturn hybrid/electric vehicle?

- It is recommended to perform a thorough inspection of the battery 71 circuit, check for any loose connections, and test the battery cells for proper functionality.

4. Can I continue driving my Saturn with the P1BB7 code present?

- It is not recommended to continue driving the vehicle with the code active, as it could lead to further damage to the hybrid/electric system.

5. What are some repair tips for resolving the P1BB7 code on a Saturn hybrid/electric vehicle?

- Repair tips may include checking and repairing any damaged wiring, replacing faulty battery cells, and resetting the OBDII system after repairs are completed.

6. Is it safe to attempt DIY repairs for the P1BB7 code on a Saturn hybrid/electric vehicle?

- DIY repairs can be attempted for minor issues like loose connections, but complex repairs involving the battery system should be handled by a professional technician.

7. How much does it typically cost to repair the P1BB7 code on a Saturn hybrid/electric vehicle?

- The cost of repairs can vary depending on the extent of the issue, but it is advisable to budget for potential battery replacements or system diagnostics.

8. Will resetting the OBDII system clear the P1BB7 code on my Saturn?

- Resetting the system may temporarily clear the code, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. Are there any preventive maintenance steps I can take to avoid the P1BB7 code on my Saturn hybrid/electric vehicle?

- Regularly inspecting the battery system, following manufacturer maintenance guidelines, and avoiding overloading the vehicle can help prevent issues leading to the P1BB7 code.

10. Can the P1BB7 code on a Saturn hybrid/electric vehicle impact the vehicle's overall performance?

- Yes, the code can impact the vehicle's performance by affecting fuel efficiency, battery operation, and overall drivability, making it essential to address the issue promptly.