AutoCodes – Cadillac – P1E5D Cadillac

P1E5D Cadillac Code - Hybrid/Electric Vehicle Battery 50 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: P1E5D Cadillac indicates Hybrid/Electric Vehicle Battery 50 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 729

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 P1E5D Cadillac 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 P1E5D Cadillac - Hybrid/Electric Vehicle Battery 50 Circuit - AutoCodes.com — P1E5D Cadillac Code - Hybrid/Electric Vehicle Battery 50 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E5D Cadillac?

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

How to Fix the DTC P1E5D Cadillac?

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 P1E5D Cadillac 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 P1E5D Cadillac Code

1. What does the OBDII code P1E5D mean on a Cadillac?

Code P1E5D indicates an issue with the Hybrid/Electric Vehicle Battery 50 Circuit, which is related to the monitoring or operation of the battery system in hybrid or electric Cadillacs.

2. What are the common symptoms of a P1E5D code?

Symptoms may include reduced or no electric assist, a warning light on the dashboard, limited driving range, or the vehicle entering limp mode.

3. What causes the P1E5D code to appear?

Common causes include a faulty battery module, damaged wiring or connectors in the battery circuit, or a malfunctioning battery management system.

4. Can I drive with a P1E5D code on my Cadillac?

Driving with a P1E5D code is not recommended as it can lead to reduced performance, potential battery damage, or complete loss of hybrid/electric functionality.

5. How is the P1E5D code diagnosed?

A technician will typically use a scan tool to retrieve the code, inspect the battery circuit wiring and connectors, and test the battery module for faults.

6. Is the P1E5D code specific to Cadillac vehicles?

Yes, the P1E5D code is specific to Cadillac hybrid or electric vehicles and pertains to the unique battery management system in these models.

7. What repairs are needed to fix a P1E5D code?

Repairs may include replacing a faulty battery module, repairing damaged wiring or connectors, or reprogramming the battery management system.

8. How much does it cost to fix a P1E5D code?

Repair costs can vary widely, typically ranging from $200 to $1,500 or more, depending on whether the issue is a simple wiring fix or requires module replacement.

9. Can a weak 12-volt battery cause the P1E5D code?

While the 12-volt battery is not directly related to the hybrid battery circuit, a weak 12-volt battery can sometimes contribute to diagnostic errors or communication issues.

10. Does the P1E5D code require battery replacement?

Not always. The issue might be related to wiring or the control system rather than the battery itself. Proper diagnosis is needed to determine the exact cause.