AutoCodes – Chevrolet – P1E86 Chevrolet

P1E86 Chevrolet Code - Hybrid/Electric Vehicle Battery 91 Circuit

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: P1E86 Chevrolet indicates Hybrid/Electric Vehicle Battery 91 Circuit.
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 779

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 Apr 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E86 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 P1E86 Chevrolet - Hybrid/Electric Vehicle Battery 91 Circuit - AutoCodes.com — P1E86 Chevrolet Code - Hybrid/Electric Vehicle Battery 91 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E86 Chevrolet?

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

How to Fix the DTC P1E86 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 P1E86 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 P1E86 Chevrolet Code

What does the OBDII code P1E86 mean on a Chevrolet?

P1E86 indicates a problem with the Hybrid/Electric Vehicle Battery 91 Circuit, typically related to communication or performance issues in the battery monitoring system.

What are the common symptoms of the P1E86 code?

Symptoms may include the check engine light or hybrid system warning light, reduced hybrid performance, or the vehicle entering a limp mode.

What causes the P1E86 code to appear?

Common causes include a faulty battery sensor, damaged wiring harness, corroded electrical connections, or an issue with the battery control module.

Can the P1E86 code affect vehicle performance?

Yes, this code can lead to reduced hybrid functionality, limited power output, or the inability to use the electric drive system.

How is the P1E86 code diagnosed?

Technicians typically use a scan tool to retrieve the code, inspect the battery system wiring and connectors, and perform tests on the battery sensor and control module.

Can I drive with the P1E86 code active?

It is not recommended to drive with this code active, as it may cause further damage to the battery system or result in limited vehicle performance.

How do you fix the P1E86 code on a Chevrolet?

Repairs may involve replacing a faulty battery sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the battery control module.

Is the P1E86 code specific to Chevrolet vehicles?

While the P1E86 code is most commonly associated with Chevrolet hybrid or electric vehicles, it may also appear on other GM hybrid models.

What tools are needed to fix the P1E86 code?

Youâ€™ll need an OBDII scan tool, a multimeter for electrical testing, and potentially specialized tools for accessing and servicing the hybrid battery system.

How much does it cost to repair a P1E86 code?

Repair costs can vary widely, ranging from $100 for simple wiring repairs to over $1,000 if the battery control module or other major components require replacement.