AutoCodes – Saturn – P1E4D Saturn

P1E4D Saturn Code - Hybrid/Electric Vehicle Battery 34 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: P1E4D Saturn indicates Hybrid/Electric Vehicle Battery 34 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 851

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 P1E4D Saturn 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 P1E4D Saturn - Hybrid/Electric Vehicle Battery 34 Circuit - AutoCodes.com — P1E4D Saturn Code - Hybrid/Electric Vehicle Battery 34 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E4D Saturn?

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

How to Fix the DTC P1E4D Saturn?

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 P1E4D Saturn 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 P1E4D Saturn Code

What does OBDII code P1E4D mean on a Saturn?

Code P1E4D indicates an issue with the Hybrid/Electric Vehicle Battery 34 Circuit, which refers to a specific voltage or communication problem within the hybrid or EV battery system.

What are the common symptoms of P1E4D on a Saturn?

Symptoms may include an illuminated check engine light, reduced hybrid or EV performance, limited driving range, or the vehicle entering a fail-safe or limp mode.

What causes the P1E4D code to appear?

Common causes include a faulty battery sensor, damaged wiring or connectors in the battery circuit, a failing battery control module, or issues with the hybrid battery pack itself.

Can I drive my Saturn with the P1E4D code active?

It is not recommended to drive the vehicle with this code active, as it may lead to further damage to the hybrid system or sudden loss of performance.

How do mechanics diagnose the P1E4D code?

Mechanics typically use a scan tool to read the code, inspect the battery circuit for damaged wiring or connectors, and test the battery control module and sensors for proper function.

What repairs fix the P1E4D code on a Saturn?

Repairs may include replacing a faulty battery sensor, repairing or replacing damaged wiring or connectors, or replacing the battery control module or hybrid battery pack if needed.

How much does it cost to fix the P1E4D code?

The cost can vary widely depending on the root cause. Minor repairs like fixing wiring may cost a few hundred dollars, while replacing the hybrid battery pack could cost several thousand dollars.

Can a weak hybrid battery trigger the P1E4D code?

Yes, a weak or failing hybrid battery can cause communication or voltage discrepancies that trigger the P1E4D code.

Does the P1E4D code require reprogramming or software updates?

In some cases, a software update for the vehicleâ€™s control modules may be necessary after repairs to ensure proper communication within the hybrid system.

Is the P1E4D code specific to Saturn vehicles?

While the code itself and its definition are standardized, its application and specific troubleshooting steps may vary between Saturn hybrid or electric models. Always consult model-specific repair information.