AutoCodes – GMC – P1E6B GMC

P1E6B GMC Code - Hybrid/Electric Vehicle Battery 64 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: P1E6B GMC indicates Hybrid/Electric Vehicle Battery 64 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 755

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 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P1E6B 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 P1E6B GMC - Hybrid/Electric Vehicle Battery 64 Circuit - AutoCodes.com — P1E6B GMC Code - Hybrid/Electric Vehicle Battery 64 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E6B GMC?

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

How to Fix the DTC P1E6B 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 P1E6B 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.

Need more information about the P1E6B GMC code?

Need more information on how to fix the P1E6B GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1E6B GMC code diagnosed by a professional: Find a repair shop in your area

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 P1E6B GMC Code

1. What does the OBDII code P1E6B mean for a GMC vehicle?

The P1E6B code indicates an issue with the Hybrid/Electric Vehicle Battery 64 Circuit, which is related to the monitoring or operation of the battery system.

2. What are the common symptoms of the P1E6B code?

Symptoms may include the check engine light turning on, reduced hybrid or electric performance, limited power mode, or failure to charge the battery.

3. What causes the P1E6B code to appear?

Possible causes include wiring or connector issues, a faulty hybrid battery cell, a malfunctioning battery control module, or internal battery pack failures.

4. Can the P1E6B code cause drivability issues?

Yes, it can lead to reduced power, limited range, or the vehicle entering a fail-safe or limp mode to protect the hybrid battery system.

5. How is the P1E6B code diagnosed?

A mechanic will use a scan tool to check for related codes, inspect wiring and connectors, and perform voltage and resistance tests on the battery circuits.

6. Can a weak 12-volt battery trigger the P1E6B code?

Yes, a weak or failing 12-volt battery can cause communication or voltage issues that may trigger this code.

7. How do you fix the P1E6B code on a GMC vehicle?

Repairs may include replacing damaged wires, repairing connectors, replacing faulty battery cells, or reprogramming or replacing the battery control module.

8. Is it safe to drive with the P1E6B code?

Driving with this code is not recommended, as it can lead to further damage to the hybrid battery system or a sudden loss of power.

9. Can the P1E6B code clear itself?

No, the code typically wonâ€™t clear on its own and requires the underlying issue to be resolved before it can be reset.

10. How much does it cost to fix the P1E6B code?

Repair costs vary depending on the issue but can range from a few hundred dollars for wiring repairs to several thousand dollars for a hybrid battery replacement.