AutoCodes – Chevrolet – P1B6E Chevrolet

P1B6E Chevrolet Code - Hybrid/Electric Vehicle Battery 46 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: P1B6E Chevrolet indicates Hybrid/Electric Vehicle Battery 46 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 787

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 P1B6E 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 P1B6E Chevrolet - Hybrid/Electric Vehicle Battery 46 Circuit High Voltage - AutoCodes.com — P1B6E Chevrolet Code - Hybrid/Electric Vehicle Battery 46 Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P1B6E Chevrolet?

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

How to Fix the DTC P1B6E 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 P1B6E 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 P1B6E Chevrolet Code

1. What does OBDII code P1B6E mean for a Chevrolet?

P1B6E indicates a high voltage issue in the circuit related to the Hybrid/Electric Vehicle Battery 46, typically signaling a problem with the battery module or its connections.

2. What are the common symptoms of code P1B6E?

Symptoms may include an illuminated check engine light, reduced hybrid or electric performance, limited driving range, or the vehicle entering limp mode.

3. What causes the P1B6E code to appear?

The code can be caused by a faulty battery module, corroded or loose electrical connections, damaged wiring, or an issue with the battery management system.

4. Can I continue driving my Chevrolet with a P1B6E code?

While the car may still operate, driving with this code is not recommended as it could lead to further damage or reduced safety in hybrid/electric systems.

5. How is the P1B6E code diagnosed?

Technicians will use a scan tool to confirm the code, inspect the battery module and related wiring, and test the high voltage circuit for irregularities.

6. What repairs are needed to fix the P1B6E code?

Repairs may include replacing the faulty battery module, cleaning or tightening electrical connections, repairing damaged wiring, or recalibrating the battery management system.

7. How much does it cost to fix the P1B6E code?

Repair costs can vary widely depending on whether the battery module needs replacement or if it's a simpler fix like repairing connections, with costs ranging from $200 to over $2,000.

8. Can I troubleshoot the P1B6E code myself?

Basic checks like ensuring connections are tight and inspecting wiring for damage can be done by experienced DIYers, but high voltage systems should only be handled by trained professionals.

9. Will resetting the code fix the P1B6E issue?

Resetting the code without addressing the root cause will only temporarily clear it, and the issue will likely return.

10. Is the P1B6E code covered under warranty?

Depending on your vehicle's age and mileage, the battery system may still be under warranty, especially for hybrid and electric vehicles with extended coverage on battery components.