AutoCodes – Chevrolet – P1B6C Chevrolet

P1B6C Chevrolet 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 Chevrolet 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 1,061

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

What does this mean?

What are the Possible Causes of the DTC P1B6C Chevrolet?

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

How to Fix the DTC P1B6C Chevrolet?

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 Chevrolet 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 Chevrolet Code

What does the OBDII code P1B6C mean in a Chevrolet vehicle?

The OBDII code P1B6C indicates a problem with the Hybrid/Electric Vehicle Battery 46 circuit performance, which typically involves issues with the battery management system.

What symptoms might I experience if my vehicle has the P1B6C code?

Common symptoms can include reduced hybrid system performance, warning lights on the dashboard (such as the check engine light), and decreased fuel efficiency.

What could cause the P1B6C code to trigger in my Chevrolet?

Possible causes include a faulty battery control module, poor electrical connections, damaged wiring, or issues with the hybrid battery itself.

How can I diagnose the issue related to the P1B6C code?

You can start by checking the battery connections and wiring for any visible damage, then use an OBDII scanner to look for related codes that may provide more insight.

Is it safe to drive my Chevrolet with the P1B6C code active?

While it may still be drivable, it is not recommended to ignore this code, as it can lead to further issues with the hybrid system and reduced vehicle performance.

What steps should I take to repair the P1B6C code?

Begin by inspecting the wiring and connectors for damage. If these appear intact, further testing of the battery management system and battery modules may be necessary, potentially requiring professional assistance.

Can I clear the P1B6C code myself?

Yes, you can use an OBDII scanner to clear the code. However, be aware that if the underlying issue is not fixed, the code will likely return.

Are there any specific tools needed to address the P1B6C code?

Basic automotive diagnostic tools like an OBDII scanner are essential. For more in-depth repairs, you may need multimeters and specialized tools for hybrid vehicles.

Will repairing the P1B6C code eliminate other related codes?

Repairing the P1B6C code may eliminate other related codes if they are all linked to the same underlying issue within the hybrid battery system. Always check for additional codes after repairs.