AutoCodes – Saturn – P1B9B Saturn

P1B9B Saturn Code - Hybrid/Electric Vehicle Battery 61 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: P1B9B Saturn indicates Hybrid/Electric Vehicle Battery 61 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 799

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 P1B9B 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 P1B9B Saturn - Hybrid/Electric Vehicle Battery 61 Circuit High Voltage - AutoCodes.com — P1B9B Saturn Code - Hybrid/Electric Vehicle Battery 61 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B9B Saturn?

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

How to Fix the DTC P1B9B 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 P1B9B 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 P1B9B Saturn Code

1. What are the common symptoms of OBDII code P1B9B Saturn (Hybrid/Electric Vehicle Battery 61 Circuit High Voltage)?

- Common symptoms include the check engine light coming on, reduced vehicle performance, and potential issues with the hybrid or electric powertrain.

2. What are some possible causes of OBDII code P1B9B Saturn?

- Possible causes include a malfunctioning high-voltage battery 61 circuit, damaged wiring or connectors, or issues with the battery control module.

3. How can I diagnose the root cause of OBDII code P1B9B Saturn?

- Diagnosing the issue may require specialized diagnostic tools and knowledge of high-voltage electrical systems. It's recommended to consult a professional or dealership for accurate diagnosis.

4. Can I continue driving my Saturn with OBDII code P1B9B present?

- It is not recommended to continue driving the vehicle with this code present, as it may lead to further damage to the hybrid or electric powertrain components.

5. How can I repair OBDII code P1B9B Saturn (Hybrid/Electric Vehicle Battery 61 Circuit High Voltage)?

- Repairing this code typically involves inspecting and repairing the high-voltage battery 61 circuit, checking and repairing any damaged wiring or connectors, and resetting the fault code.

6. Are there any safety precautions to keep in mind when dealing with OBDII code P1B9B Saturn?

- When working on high-voltage systems like the hybrid or electric powertrain, always follow proper safety procedures and wear appropriate personal protective equipment to prevent electric shock.

7. Will resetting the OBDII code P1B9B Saturn clear the issue permanently?

- Resetting the fault code may temporarily clear the warning light, but it will not fix the underlying issue causing the code. Proper diagnosis and repair are necessary for a permanent solution.

8. Can a DIY enthusiast attempt to repair OBDII code P1B9B Saturn?

- Due to the complexity and safety considerations of working on high-voltage systems, it is recommended to seek professional help or consult with a dealership experienced in hybrid or electric vehicle repairs.

9. How often does OBDII code P1B9B Saturn occur in Saturn hybrid/electric vehicles?

- The occurrence of this code may vary depending on the vehicle's age, usage, and maintenance history. Regular maintenance and inspections can help prevent issues like P1B9B from arising.

10. Is it possible for OBDII code P1B9B Saturn to be a false alarm?

- While rare, false alarms can occur due to sensor malfunctions or momentary electrical glitches. It's best to have the system checked by a professional to confirm the issue.