AutoCodes – GMC – P1E6F GMC

P1E6F GMC Code - Hybrid/Electric Vehicle Battery 68 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: P1E6F GMC indicates Hybrid/Electric Vehicle Battery 68 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 850

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
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Code P1E6F 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 P1E6F GMC - Hybrid/Electric Vehicle Battery 68 Circuit - AutoCodes.com — P1E6F GMC Code - Hybrid/Electric Vehicle Battery 68 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E6F GMC?

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

How to Fix the DTC P1E6F 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 P1E6F 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 P1E6F GMC Code

1. What does the OBDII code P1E6F on a GMC vehicle mean?

P1E6F indicates an issue with the Hybrid/Electric Vehicle Battery 68 Circuit, which may involve voltage inconsistencies or communication errors in the battery system.

2. What are the common symptoms of the P1E6F code?

Symptoms may include the check engine light turning on, limited vehicle performance, reduced fuel efficiency, or warning messages about the hybrid/electric battery on the dashboard.

3. What causes the P1E6F code on a GMC vehicle?

Common causes include a faulty battery module, damaged wiring or connectors in the battery circuit, or a malfunctioning Battery Energy Control Module (BECM).

4. Can I drive with the P1E6F code active?

Driving with the P1E6F code is not recommended, as it may lead to reduced performance or further damage to the hybrid/electric battery system.

5. How do I diagnose a P1E6F code on my GMC?

Diagnosis typically involves scanning the vehicle with an advanced OBDII scanner, checking the battery circuits for voltage issues, inspecting the wiring and connectors, and testing the BECM for faults.

6. How is the P1E6F code repaired on a GMC vehicle?

Repairs may involve replacing a damaged battery module, repairing or replacing faulty wiring, or reprogramming or replacing the Battery Energy Control Module.

7. What tools are needed to troubleshoot the P1E6F code?

Youâ€™ll need an advanced OBDII scanner capable of reading hybrid/electric vehicle systems, a multimeter for voltage testing, and possibly manufacturer-specific diagnostic tools.

8. Can a weak 12V battery cause the P1E6F code?

While unlikely, a weak 12V battery can sometimes contribute to hybrid system errors. Itâ€™s worth testing and replacing the 12V battery if necessary.

9. Is the P1E6F code covered under warranty for GMC vehicles?

Depending on the vehicleâ€™s age and mileage, the P1E6F code may be covered under the hybrid/electric battery or emissions warranty. Check with your dealership for details.

10. How much does it cost to fix the P1E6F code on a GMC?

Repair costs vary widely depending on the issue, but replacing a hybrid battery module or BECM can cost from a few hundred to several thousand dollars, including labor.