AutoCodes – GMC – P1E4E GMC

P1E4E GMC Code - Hybrid/Electric Vehicle Battery 35 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: P1E4E GMC indicates Hybrid/Electric Vehicle Battery 35 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 696

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E4E 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 P1E4E GMC - Hybrid/Electric Vehicle Battery 35 Circuit - AutoCodes.com — P1E4E GMC Code - Hybrid/Electric Vehicle Battery 35 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E4E GMC?

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

How to Fix the DTC P1E4E 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 P1E4E 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 P1E4E GMC Code

What does the OBDII code P1E4E indicate in a GMC vehicle?

The OBDII code P1E4E indicates a problem with the Hybrid/Electric Vehicle Battery 35 Circuit, which can affect the vehicle's hybrid system performance.

What are common symptoms of the P1E4E code?

Common symptoms may include reduced power, warning lights on the dashboard, poor fuel economy, or the vehicle entering limp mode.

What could cause the P1E4E code to trigger?

Potential causes include a malfunctioning battery management system, damaged wiring or connectors in the battery circuit, or issues with the hybrid battery itself.

How can I diagnose the P1E4E code?

To diagnose the P1E4E code, use an OBDII scanner to check for additional trouble codes, inspect the battery connections and wiring, and test the hybrid battery's voltage and health.

What repairs are typically needed for the P1E4E code?

Repairs may involve fixing or replacing damaged wiring, repairing or replacing connectors, or addressing issues with the battery management system or the hybrid battery itself.

Can I drive my GMC vehicle with the P1E4E code?

It is not recommended to drive the vehicle with this code, as it may lead to reduced performance and potential further damage to the hybrid system.

How can I prevent the P1E4E code from occurring?

Regular maintenance of the hybrid system, including checking battery connections and keeping the battery clean, can help prevent this code from appearing.

Is it safe to reset the P1E4E code without fixing the issue?

Resetting the P1E4E code without addressing the underlying issue is not safe, as it can lead to more significant problems and safety concerns while driving.

What should I do if the P1E4E code keeps returning?

If the P1E4E code keeps returning, it's best to consult a professional mechanic or a dealership with experience in hybrid vehicles for a thorough diagnosis and repair.