AutoCodes – GMC – P1E86 GMC

P1E86 GMC 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 GMC 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 789

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 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 P1E86 GMC - Hybrid/Electric Vehicle Battery 91 Circuit - AutoCodes.com — P1E86 GMC Code - Hybrid/Electric Vehicle Battery 91 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E86 GMC?

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

How to Fix the DTC P1E86 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 P1E86 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 P1E86 GMC Code

1. What are the common symptoms of OBDII code P1E86 GMC related to the Hybrid/Electric Vehicle Battery 91 Circuit?

- Common symptoms include a noticeable decrease in fuel efficiency, reduced power output, and potential issues with starting the vehicle.

2. What are the possible causes of OBDII code P1E86 GMC indicating a problem with the Hybrid/Electric Vehicle Battery 91 Circuit?

- The code may be triggered by a faulty battery pack, damaged battery cells, wiring issues, or problems with the battery management system.

3. How can I diagnose the OBDII code P1E86 GMC in relation to the Hybrid/Electric Vehicle Battery 91 Circuit?

- Diagnosis typically involves using a scan tool to read the code, inspecting the battery pack and related components for any visible damage, and conducting electrical tests to pinpoint the issue.

4. Is it safe to continue driving with OBDII code P1E86 GMC related to the Hybrid/Electric Vehicle Battery 91 Circuit?

- It is not recommended to drive the vehicle when this code is present, as it can lead to further damage to the battery system and potentially affect the vehicle's performance.

5. Can I reset the OBDII code P1E86 GMC on my own after repairing the issue with the Hybrid/Electric Vehicle Battery 91 Circuit?

- Yes, you can reset the code using a scan tool or by disconnecting the vehicle's battery for a few minutes. However, it is important to ensure that the underlying issue has been properly addressed.

6. Are there any DIY repair tips for addressing OBDII code P1E86 GMC related to the Hybrid/Electric Vehicle Battery 91 Circuit?

- DIY repair may include checking and tightening battery connections, inspecting wiring for damage, and ensuring proper battery pack cooling to prevent overheating issues.

7. How much does it typically cost to repair OBDII code P1E86 GMC involving the Hybrid/Electric Vehicle Battery 91 Circuit?

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

8. What are the long-term implications of ignoring OBDII code P1E86 GMC related to the Hybrid/Electric Vehicle Battery 91 Circuit?

- Ignoring this code can lead to further damage to the battery system, reduced vehicle efficiency, and potential safety hazards, so it is important to address it promptly.

9. Can extreme weather conditions affect the likelihood of OBDII code P1E86 GMC appearing for the Hybrid/Electric Vehicle Battery 91 Circuit?

- Yes, extreme temperatures can impact the performance and health of the battery system, potentially triggering this code more frequently in such conditions.

10. How can regular maintenance help prevent OBDII code P1E86 GMC issues with the Hybrid/Electric Vehicle Battery 91 Circuit?

- Regular maintenance, such as checking and replacing the battery as needed, inspecting wiring for wear and tear, and monitoring the battery's temperature, can help prevent issues leading to this code.