AutoCodes – Saturn – P1B9C Saturn

P1B9C Saturn Code - Hybrid/Electric Vehicle Battery 62 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: P1B9C Saturn indicates Hybrid/Electric Vehicle Battery 62 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 798

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 P1B9C 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 P1B9C Saturn - Hybrid/Electric Vehicle Battery 62 Circuit Performance - AutoCodes.com — P1B9C Saturn Code - Hybrid/Electric Vehicle Battery 62 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B9C Saturn?

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

How to Fix the DTC P1B9C 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 P1B9C 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 P1B9C Saturn Code

1. What are the common symptoms of OBDII code P1B9C in a Saturn hybrid/electric vehicle?

- Common symptoms may include poor fuel efficiency, reduced electric range, difficulty starting the vehicle, and illumination of the check engine light.

2. What are some possible causes of OBDII code P1B9C in a Saturn hybrid/electric vehicle?

- Possible causes may include issues with the high voltage battery, faulty battery management system, wiring issues in the battery circuit, or a malfunctioning hybrid powertrain control module.

3. How can I diagnose the OBDII code P1B9C in my Saturn hybrid/electric vehicle?

- Diagnosis typically involves using a scan tool to retrieve the specific fault code, checking the high voltage battery for any visible damage or leaks, inspecting the battery circuit wiring, and conducting a thorough system test.

4. Can I continue driving my Saturn hybrid/electric vehicle with OBDII code P1B9C present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid/electric system and potentially compromise vehicle safety.

5. Are there any DIY repairs I can attempt for OBDII code P1B9C in my Saturn hybrid/electric vehicle?

- DIY repairs for this code are not recommended due to the high voltage nature of the components involved. It is best to seek professional assistance from a certified technician.

6. What is the typical cost to repair OBDII code P1B9C in a Saturn hybrid/electric vehicle?

- The cost of repair can vary depending on the exact cause of the issue. It is recommended to get a diagnostic assessment from a qualified technician to determine the cost of repairs.

7. How important is it to address OBDII code P1B9C promptly in a Saturn hybrid/electric vehicle?

- It is crucial to address this code promptly to prevent further damage to the hybrid/electric system, ensure optimal vehicle performance, and maintain safety while driving.

8. What steps can I take to prevent OBDII code P1B9C from occurring in my Saturn hybrid/electric vehicle?

- Regular maintenance and inspections of the high voltage battery system, following manufacturer's guidelines for battery care, and addressing any warning signs promptly can help prevent this code from occurring.

9. Is OBDII code P1B9C specific to Saturn hybrid/electric vehicles only?

- While this particular code may be specific to Saturn hybrid/electric vehicles, similar codes related to hybrid/electric system performance can be found in other vehicle makes and models.

10. How long does it typically take to repair OBDII code P1B9C in a Saturn hybrid/electric vehicle?

- The repair time can vary depending on the complexity of the issue and availability of parts. It is advisable to consult with a technician for an accurate estimate of repair time.