AutoCodes – GMC – P1BC0 GMC

P1BC0 GMC Code - Hybrid/Electric Vehicle Battery 74 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: P1BC0 GMC indicates Hybrid/Electric Vehicle Battery 74 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 820

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 P1BC0 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 P1BC0 GMC - Hybrid/Electric Vehicle Battery 74 Circuit Performance - AutoCodes.com — P1BC0 GMC Code - Hybrid/Electric Vehicle Battery 74 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BC0 GMC?

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

How to Fix the DTC P1BC0 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 P1BC0 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 P1BC0 GMC Code

1. What are common symptoms of OBDII code P1BC0 GMC related to Hybrid/Electric Vehicle Battery 74 Circuit Performance?

- Common symptoms include poor fuel efficiency, reduced hybrid system performance, and potential illumination of the check engine light.

2. What are some possible causes of OBDII code P1BC0 GMC for Hybrid/Electric Vehicle Battery 74 Circuit Performance?

- Possible causes include a faulty hybrid/electric vehicle battery, damaged battery wiring or connections, and issues with the battery management system.

3. How can I diagnose OBDII code P1BC0 GMC for Hybrid/Electric Vehicle Battery 74 Circuit Performance?

- Diagnosis typically involves using a scan tool to read the code, checking the battery voltage and connections, and inspecting the battery management system for faults.

4. Is it safe to continue driving with OBDII code P1BC0 GMC related to Hybrid/Electric Vehicle Battery 74 Circuit Performance?

- It is not recommended to continue driving with this code as it can lead to further damage to the hybrid system and potentially unsafe driving conditions.

5. Can I reset OBDII code P1BC0 GMC for Hybrid/Electric Vehicle Battery 74 Circuit Performance on my own?

- While you can clear the code with a scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

6. How much does it typically cost to repair OBDII code P1BC0 GMC for Hybrid/Electric Vehicle Battery 74 Circuit Performance?

- The cost of repair can vary depending on the specific issue, but it may involve battery replacement, wiring repairs, or battery management system diagnostics, potentially ranging from a few hundred to a few thousand dollars.

7. Are there any preventive maintenance tips to avoid OBDII code P1BC0 GMC for Hybrid/Electric Vehicle Battery 74 Circuit Performance?

- Regularly inspecting the battery connections, maintaining the battery charge level, and following the manufacturer's recommended maintenance schedule can help prevent issues leading to this code.

8. Can a DIY enthusiast troubleshoot and repair OBDII code P1BC0 GMC for Hybrid/Electric Vehicle Battery 74 Circuit Performance?

- While some basic inspections and checks can be done by a DIY enthusiast, diagnosing and repairing complex hybrid/electric vehicle system issues may require specialized knowledge and tools best left to professionals.

9. Will OBDII code P1BC0 GMC for Hybrid/Electric Vehicle Battery 74 Circuit Performance affect the overall performance of my vehicle?

- Yes, this code can impact the overall performance of the hybrid/electric vehicle system, potentially leading to reduced power output, decreased fuel efficiency, and drivability issues.

10. How urgent is it to address OBDII code P1BC0 GMC for Hybrid/Electric Vehicle Battery 74 Circuit Performance?

- It is recommended to address this code promptly to prevent further damage to the hybrid/electric vehicle system and ensure safe and efficient operation of the vehicle.