AutoCodes – Saturn – P0B89 Saturn

P0B89 Saturn Code - Hybrid/Electric Vehicle Battery 16 Circuit High Voltage

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
P0B89 Saturn indicates Hybrid/Electric Vehicle Battery 16 Circuit High Voltage.
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 906
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 08, 2020
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Code P0B89 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 P0B89 Saturn - Hybrid/Electric Vehicle Battery 16 Circuit High Voltage - AutoCodes.com
P0B89 Saturn Code - Hybrid/Electric Vehicle Battery 16 Circuit High Voltage

What are the Possible Causes of the DTC P0B89 Saturn?

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

How to Fix the DTC P0B89 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 P0B89 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.

Need more information about the P0B89 Saturn code?

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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 P0B89 Saturn Code

1. What are the common symptoms of OBDII code P0B89 in a Saturn Hybrid/Electric Vehicle?

- Common symptoms include the check engine light coming on, reduced fuel efficiency, and potential hybrid system performance issues.

2. What does the OBDII code P0B89 indicate in a Saturn Hybrid/Electric Vehicle?

- This code indicates a high voltage condition in the Hybrid/Electric Vehicle Battery 16 Circuit.

3. What are the possible causes of OBDII code P0B89 in a Saturn Hybrid/Electric Vehicle?

- Possible causes include a faulty battery pack, issues with high voltage cables, damaged connectors, or a problem with the battery management system.

4. How can I diagnose the OBDII code P0B89 in my Saturn Hybrid/Electric Vehicle?

- Diagnosis typically involves using a scan tool to read the code, inspecting the high voltage components, and testing the battery pack and related systems.

5. Is it safe to continue driving with OBDII code P0B89 in a Saturn Hybrid/Electric Vehicle?

- It is not recommended to continue driving with this code present, as it can lead to further damage to the hybrid system and potential safety hazards.

6. Can I repair OBDII code P0B89 in my Saturn Hybrid/Electric Vehicle myself?

- Repairing this code may require specialized knowledge and tools due to the high voltage nature of the system. It is recommended to seek professional help for diagnosis and repair.

7. How much does it typically cost to fix OBDII code P0B89 in a Saturn Hybrid/Electric Vehicle?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing components in the high voltage system, which can be costly.

8. Are there any preventative maintenance tips to avoid OBDII code P0B89 in a Saturn Hybrid/Electric Vehicle?

- Regularly inspecting the high voltage components, keeping the battery pack well-maintained, and following manufacturer-recommended service intervals can help prevent this code from appearing.

9. Can OBDII code P0B89 in a Saturn Hybrid/Electric Vehicle be related to other codes or issues?

- Yes, this code may be related to other high voltage system codes, such as P0B88 or P0B8A, indicating different faults within the system.

10. How urgent is it to address OBDII code P0B89 in a Saturn Hybrid/Electric Vehicle?

- It is recommended to address this code promptly to prevent further damage to the hybrid system and ensure safe operation of the vehicle.

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