AutoCodes – GMC – P1B6C GMC

P1B6C GMC Code - Hybrid/Electric Vehicle Battery 46 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: P1B6C GMC indicates Hybrid/Electric Vehicle Battery 46 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 806

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 P1B6C 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 P1B6C GMC - Hybrid/Electric Vehicle Battery 46 Circuit Performance - AutoCodes.com — P1B6C GMC Code - Hybrid/Electric Vehicle Battery 46 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1B6C GMC?

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

How to Fix the DTC P1B6C 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 P1B6C 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 P1B6C GMC Code

1. What are the common symptoms of OBDII code P1B6C GMC related to Hybrid/Electric Vehicle Battery 46 Circuit Performance?

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

2. What are the possible causes of OBDII code P1B6C GMC related to Hybrid/Electric Vehicle Battery 46 Circuit Performance?

- Possible causes may include a faulty battery management system, issues with high-voltage wiring, battery pack degradation, or a malfunctioning battery control module.

3. How can I diagnose OBDII code P1B6C GMC related to Hybrid/Electric Vehicle Battery 46 Circuit Performance?

- Diagnosis typically involves using a scan tool to retrieve the code, performing a visual inspection of the battery components, testing the high-voltage system, and checking for any loose connections.

4. What are some repair tips for addressing OBDII code P1B6C GMC related to Hybrid/Electric Vehicle Battery 46 Circuit Performance?

- Repair tips may include repairing or replacing damaged wiring, recalibrating the battery control module, performing a battery capacity test, or replacing the hybrid battery pack if necessary.

5. Can I continue driving my vehicle with OBDII code P1B6C GMC related to Hybrid/Electric Vehicle Battery 46 Circuit Performance?

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

6. How much does it typically cost to repair OBDII code P1B6C GMC related to Hybrid/Electric Vehicle Battery 46 Circuit Performance?

- The cost of repairs can vary depending on the exact cause of the issue, but it may range from a few hundred to a few thousand dollars, especially if battery replacement is required.

7. Will resetting the OBDII code P1B6C GMC related to Hybrid/Electric Vehicle Battery 46 Circuit Performance solve the issue?

- Resetting the code may temporarily turn off the check engine light, but it will not fix the underlying problem causing the code to trigger. It's important to diagnose and address the root cause of the issue.

8. How often should I have the hybrid/electric vehicle battery system inspected to prevent OBDII code P1B6C GMC?

- It is recommended to have the battery system inspected as part of regular maintenance or whenever you notice any unusual symptoms, to prevent the occurrence of codes like P1B6C related to battery circuit performance.

9. Are there any DIY steps I can take to troubleshoot OBDII code P1B6C GMC related to Hybrid/Electric Vehicle Battery 46 Circuit Performance?

- While some basic inspections like checking for loose connections or damaged wiring can be done DIY, diagnosing and repairing issues related to hybrid/electric vehicle batteries should be left to professionals due to the high-voltage nature of these systems.

10. Is OBDII code P1B6C GMC related to Hybrid/Electric Vehicle Battery 46 Circuit Performance a common issue in hybrid/electric vehicles?

- While not extremely common, issues related to hybrid/electric vehicle batteries and circuits can occur due to various factors, highlighting the importance of proper maintenance and timely repairs.