AutoCodes – GMC – P1BCC GMC

P1BCC GMC Code - Hybrid/Electric Vehicle Battery 78 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: P1BCC GMC indicates Hybrid/Electric Vehicle Battery 78 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 803

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1BCC 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 P1BCC GMC - Hybrid/Electric Vehicle Battery 78 Circuit Performance - AutoCodes.com — P1BCC GMC Code - Hybrid/Electric Vehicle Battery 78 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1BCC GMC?

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

How to Fix the DTC P1BCC 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 P1BCC 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.

Need more information about the P1BCC GMC code?

Need more information on how to fix the P1BCC GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1BCC GMC code diagnosed by a professional: Find a repair shop in your area

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 P1BCC GMC Code

1. What are common symptoms of OBDII code P1BCC GMC (Hybrid/Electric Vehicle Battery 78 Circuit Performance)?

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

2. What are possible causes of OBDII code P1BCC GMC?

- Possible causes include a faulty hybrid/electric vehicle battery 78 circuit, damaged wiring or connectors, software issues, or problems with the battery management system.

3. How can I diagnose OBDII code P1BCC GMC?

- Diagnosis typically involves using a professional OBDII scanner to read the code, inspecting the hybrid/electric vehicle battery 78 circuit and related components for damage, and performing necessary tests to pinpoint the issue.

4. Can I still drive my vehicle with OBDII code P1BCC GMC?

- It is not recommended to continue driving your vehicle with this code present, as it can lead to further damage to the hybrid/electric vehicle battery system and potentially affect the vehicle's overall performance.

5. How can I repair OBDII code P1BCC GMC?

- Repairing this code may involve replacing the faulty hybrid/electric vehicle battery 78 circuit, repairing damaged wiring or connectors, updating software, or addressing any underlying issues with the battery management system.

6. Is it safe to attempt DIY repairs for OBDII code P1BCC GMC?

- Due to the complexity of the hybrid/electric vehicle battery system, it is recommended to seek assistance from a qualified technician or dealership for proper diagnosis and repair of this code.

7. Will resetting the OBDII code P1BCC GMC make it go away permanently?

- Simply resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is essential to diagnose and repair the root cause to resolve the problem fully.

8. How urgent is it to address OBDII code P1BCC GMC?

- It is advisable to address this code promptly to prevent further damage to the hybrid/electric vehicle battery system and ensure optimal performance of your vehicle.

9. Can extreme weather conditions contribute to triggering OBDII code P1BCC GMC?

- Extreme weather conditions, such as extreme heat or cold, can potentially impact the performance of the hybrid/electric vehicle battery system and contribute to triggering this code.

10. How can regular maintenance help prevent OBDII code P1BCC GMC?

- Regular maintenance, including scheduled check-ups on the hybrid/electric vehicle battery system, can help identify and address potential issues before they escalate into triggering OBDII code P1BCC GMC.