AutoCodes – Saturn – P1BC9 Saturn

P1BC9 Saturn Code - Hybrid/Electric Vehicle Battery 77 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: P1BC9 Saturn indicates Hybrid/Electric Vehicle Battery 77 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 871

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 P1BC9 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 P1BC9 Saturn - Hybrid/Electric Vehicle Battery 77 Circuit Performance - AutoCodes.com — P1BC9 Saturn Code - Hybrid/Electric Vehicle Battery 77 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BC9 Saturn?

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

How to Fix the DTC P1BC9 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 P1BC9 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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Need Help with the 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 P1BC9 Saturn Code

1. What are common symptoms of OBDII code P1BC9 in a Saturn Hybrid/Electric Vehicle?

The common symptoms of code P1BC9 may include decreased fuel efficiency, reduced power output, and the illumination of the check engine light.

2. What does the OBDII code P1BC9 indicate in a Saturn Hybrid/Electric Vehicle?

Code P1BC9 indicates a performance issue with the Hybrid/Electric Vehicle Battery 77 circuit in a Saturn vehicle.

3. What are possible causes of OBDII code P1BC9 in a Saturn Hybrid/Electric Vehicle?

Possible causes of code P1BC9 may include a faulty battery pack, wiring issues in the battery circuit, or problems with the battery management system.

4. How can I diagnose the OBDII code P1BC9 in my Saturn Hybrid/Electric Vehicle?

Diagnosing code P1BC9 typically involves using a scan tool to read the code, inspecting the battery and circuit connections, and testing the battery pack's performance.

5. Can I drive my Saturn Hybrid/Electric Vehicle with OBDII code P1BC9?

It is not recommended to drive your vehicle with an active P1BC9 code, as it can lead to further damage to the battery system and affect vehicle performance.

6. How can I reset the OBDII code P1BC9 in my Saturn Hybrid/Electric Vehicle?

Resetting the P1BC9 code can be done using a scan tool to clear the code after addressing the underlying issue with the battery circuit.

7. Is it safe to repair OBDII code P1BC9 in a Saturn Hybrid/Electric Vehicle myself?

Due to the complexity of the hybrid/electric vehicle system, it is recommended to have the code P1BC9 diagnosed and repaired by a qualified technician familiar with hybrid vehicle systems.

8. What are the possible repair options for OBDII code P1BC9 in a Saturn Hybrid/Electric Vehicle?

Repair options for code P1BC9 may include replacing the battery pack, repairing any damaged wiring, or reprogramming the battery management system.

9. How can I prevent OBDII code P1BC9 from occurring in my Saturn Hybrid/Electric Vehicle?

Regular maintenance of the hybrid/electric vehicle system, including checking the battery connections and ensuring proper charging, can help prevent code P1BC9 from occurring.

10. Will OBDII code P1BC9 cause my Saturn Hybrid/Electric Vehicle to stop running?

While code P1BC9 can affect the performance of your vehicle, it is unlikely to cause your Saturn Hybrid/Electric Vehicle to stop running completely. However, addressing the issue promptly is recommended to avoid further complications.