AutoCodes – Chevrolet – P1B6B Chevrolet

P1B6B Chevrolet Code - Hybrid/Electric Vehicle Battery 45 Circuit High Voltage

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: P1B6B Chevrolet indicates Hybrid/Electric Vehicle Battery 45 Circuit High Voltage.
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 785

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 P1B6B 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 P1B6B Chevrolet - Hybrid/Electric Vehicle Battery 45 Circuit High Voltage - AutoCodes.com — P1B6B Chevrolet Code - Hybrid/Electric Vehicle Battery 45 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B6B Chevrolet?

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

How to Fix the DTC P1B6B 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 P1B6B 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 P1B6B Chevrolet Code

1. What are the common symptoms of OBDII code P1B6B in a Chevrolet hybrid/electric vehicle?

- Common symptoms include poor fuel efficiency, reduced power output, and potential warning lights on the dashboard related to the high voltage circuit.

2. What can cause the OBDII code P1B6B to trigger in a Chevrolet hybrid/electric vehicle?

- This code is often triggered by issues such as a faulty high voltage battery, damaged wiring in the high voltage circuit, or a malfunctioning battery management system.

3. How serious is the OBDII code P1B6B in a Chevrolet hybrid/electric vehicle?

- This code indicates a high voltage circuit issue in the vehicle's battery system, which can affect the overall performance and safety of the vehicle. It should be addressed promptly.

4. What are some DIY repair tips for addressing the OBDII code P1B6B in a Chevrolet hybrid/electric vehicle?

- DIY repair tips may include checking and tightening battery connections, inspecting the high voltage wiring for damage, and resetting the battery management system.

5. Can driving with the OBDII code P1B6B in a Chevrolet hybrid/electric vehicle cause further damage?

- Continuing to drive with this code present can potentially cause damage to the high voltage battery system and may lead to more severe issues over time. It is recommended to address the problem promptly.

6. How can a mechanic diagnose the OBDII code P1B6B in a Chevrolet hybrid/electric vehicle?

- A mechanic can use a diagnostic scanner to read the code, perform a thorough inspection of the high voltage circuit components, and conduct tests to pinpoint the exact cause of the issue.

7. Is it safe to reset the OBDII code P1B6B in a Chevrolet hybrid/electric vehicle without addressing the underlying problem?

- It is not recommended to simply reset the code without diagnosing and fixing the root cause, as the issue may persist and potentially lead to further complications in the vehicle's high voltage system.

8. How much does it typically cost to repair the OBDII code P1B6B in a Chevrolet hybrid/electric vehicle?

- The cost of repairing this code can vary depending on the specific issue causing it. It is advisable to consult with a professional mechanic for an accurate diagnosis and cost estimate.

9. Can the OBDII code P1B6B in a Chevrolet hybrid/electric vehicle be prevented?

- Regular maintenance, such as checking the high voltage battery system, ensuring proper connections, and addressing any warning signs promptly, can help prevent issues that trigger this code.

10. Are there any recalls or technical service bulletins related to the OBDII code P1B6B in Chevrolet hybrid/electric vehicles?

- It is recommended to check with Chevrolet dealerships or online resources for any recalls or technical service bulletins related to this specific OBDII code to stay informed about potential issues and solutions.