AutoCodes – Saturn – P0B9C Saturn

P0B9C Saturn Code - Hybrid/Electric Vehicle Battery 20 Circuit Low 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: P0B9C Saturn indicates Hybrid/Electric Vehicle Battery 20 Circuit Low 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 870

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 P0B9C 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 P0B9C Saturn - Hybrid/Electric Vehicle Battery 20 Circuit Low Voltage - AutoCodes.com — P0B9C Saturn Code - Hybrid/Electric Vehicle Battery 20 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0B9C Saturn?

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

How to Fix the DTC P0B9C 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 P0B9C 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 P0B9C Saturn Code

1. What are the common symptoms of OBDII code P0B9C in a Saturn Hybrid/Electric Vehicle?

- Common symptoms include poor fuel efficiency, loss of power, and the vehicle may not start.

2. What are the possible causes of the Hybrid/Electric Vehicle Battery 20 Circuit Low Voltage code in a Saturn?

- The code P0B9C can be triggered by issues such as a failing hybrid/electric battery, faulty battery management system, or corroded electrical connections.

3. How can I diagnose the OBDII code P0B9C in my Saturn Hybrid/Electric Vehicle?

- A thorough diagnostic scan using an OBDII scanner is recommended to pinpoint the exact cause of the code. Additionally, a visual inspection of the battery and related components can be helpful.

4. Are there any quick repair tips for resolving the Hybrid/Electric Vehicle Battery 20 Circuit Low Voltage code?

- Quick repair tips include checking and cleaning the battery terminals, ensuring proper battery connections, and verifying the battery's health using a diagnostic tool.

5. Can driving with the P0B9C code present cause further damage to the vehicle?

- Continuing to drive with the P0B9C code present can potentially damage the electrical system, reduce fuel efficiency, and lead to a complete failure of the hybrid/electric system.

6. How much does it typically cost to repair the Hybrid/Electric Vehicle Battery 20 Circuit Low Voltage issue in a Saturn?

- The cost of repairs can vary depending on the exact cause of the code. Repairs may range from a simple battery terminal cleaning to a more complex battery replacement, potentially costing hundreds to thousands of dollars.

7. Is it safe to continue driving my Saturn Hybrid/Electric Vehicle with the P0B9C code illuminated?

- It is not recommended to continue driving the vehicle with the P0B9C code illuminated, as it can lead to further damage and potentially unsafe driving conditions.

8. Can I reset the OBDII code P0B9C in my Saturn Hybrid/Electric Vehicle using a simple reset tool?

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

9. How often should I check the hybrid/electric battery system in my Saturn to prevent the P0B9C code from appearing?

- Regular maintenance checks, including inspecting the battery connections and monitoring battery health, should be conducted as part of routine vehicle care to prevent issues like the P0B9C code.

10. Are there any recalls or technical service bulletins related to the Hybrid/Electric Vehicle Battery 20 Circuit Low Voltage code in Saturn vehicles?

- It is advisable to check with the manufacturer or authorized service centers for any recalls or technical service bulletins related to the P0B9C code in Saturn Hybrid/Electric Vehicles.