AutoCodes – GMC – P1BC3 GMC

P1BC3 GMC Code - Hybrid/Electric Vehicle Battery 75 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: P1BC3 GMC indicates Hybrid/Electric Vehicle Battery 75 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 913

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 P1BC3 GMC 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 P1BC3 GMC - Hybrid/Electric Vehicle Battery 75 Circuit Performance - AutoCodes.com — P1BC3 GMC Code - Hybrid/Electric Vehicle Battery 75 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BC3 GMC?

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

How to Fix the DTC P1BC3 GMC?

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 P1BC3 GMC 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 P1BC3 GMC Code

1. What are the common symptoms of OBDII code P1BC3 GMC related to Hybrid/Electric Vehicle Battery 75 Circuit Performance?

- Common symptoms include reduced hybrid/electric vehicle performance, decreased fuel efficiency, and potential issues with the battery system.

2. What are the possible causes of OBDII code P1BC3 GMC indicating Hybrid/Electric Vehicle Battery 75 Circuit Performance issues?

- Possible causes may include a faulty battery pack, damaged battery cells, issues with the battery management system, or problems with the high voltage circuitry.

3. How can I diagnose the OBDII code P1BC3 GMC related to Hybrid/Electric Vehicle Battery 75 Circuit Performance?

- Diagnosis typically involves using a professional OBDII scanner to read the specific fault codes, conducting a thorough inspection of the battery system, and testing the high voltage components for any abnormalities.

4. Is it safe to continue driving with OBDII code P1BC3 GMC indicating Hybrid/Electric Vehicle Battery 75 Circuit Performance problems?

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

5. What are some repair tips for addressing OBDII code P1BC3 GMC linked to Hybrid/Electric Vehicle Battery 75 Circuit Performance?

- Repair tips may include checking and replacing damaged battery cells, resetting the battery management system, ensuring proper connections in the high voltage circuitry, and performing a software update if available.

6. Can OBDII code P1BC3 GMC related to Hybrid/Electric Vehicle Battery 75 Circuit Performance be reset without fixing the underlying issue?

- While the code can be cleared using an OBDII scanner, it is crucial to address the root cause of the problem to prevent recurring issues and ensure the safety and performance of the vehicle.

7. Are there any specific maintenance practices that can help prevent OBDII code P1BC3 GMC issues in Hybrid/Electric Vehicles?

- Regularly inspecting the battery system, following manufacturer-recommended maintenance schedules, avoiding deep discharges of the battery, and keeping the high voltage components clean and well-maintained can help prevent such issues.

8. How can I differentiate between a minor issue and a serious problem when encountering OBDII code P1BC3 GMC for Hybrid/Electric Vehicle Battery 75 Circuit Performance?

- Minor issues may be temporary and could be resolved by resetting the system, while serious problems may require professional diagnosis and repair to ensure the safety and functionality of the hybrid/electric vehicle.

9. Can extreme weather conditions impact the occurrence of OBDII code P1BC3 GMC related to Hybrid/Electric Vehicle Battery 75 Circuit Performance?

- Yes, extreme temperatures can affect the performance and health of the battery system in hybrid/electric vehicles, potentially leading to issues that trigger this fault code.

10. Is it advisable to attempt repairs for OBDII code P1BC3 GMC linked to Hybrid/Electric Vehicle Battery 75 Circuit Performance without prior experience or professional help?

- Due to the high voltage nature of the components involved, it is recommended to seek professional assistance or guidance when dealing with repairs related to this fault code to ensure safety and proper resolution of the issue.