AutoCodes – Cadillac – P1EA5 Cadillac

P1EA5 Cadillac Code - Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit

Quick Answer

The drive motor battery contains 288 cells. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection. 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: P1EA5 Cadillac indicates Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection.
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 832

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 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1EA5 Cadillac Description

The drive motor battery contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the drive motor battery assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 volts, for a nominal system voltage of 355 volts 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 cell groups. Voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A serviceable voltage sense harness joins this connector to a drive motor battery high-voltage interface control module, also located on the top surface of the battery section. The drive motor battery high-voltage interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one drive motor battery high-voltage interface control module located on battery sections one and two, and two drive motor battery high-voltage interface control modules associated with battery section three. The drive motor battery high-voltage interface control module, voltage sense harnesses, battery control 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 P1EA5 Cadillac - Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit - AutoCodes.com — P1EA5 Cadillac Code - Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1EA5 Cadillac?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC P1EA5 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 P1EA5 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 P1EA5 Cadillac Code

1. What are common symptoms of the OBDII code P1EA5 in a Cadillac Hybrid/EV Battery Interface Control Module?

- Common symptoms include illuminated Check Engine light, reduced engine performance, and potential issues with the hybrid or electric drivetrain.

2. What causes the OBDII code P1EA5 related to the Hybrid/EV Battery Interface Control Module in a Cadillac?

- The code P1EA5 is typically triggered by a malfunction in the 4.5V reference circuit within the Hybrid/EV Battery Interface Control Module.

3. How serious is the OBDII code P1EA5 in a Cadillac Hybrid/EV vehicle?

- The code P1EA5 can indicate a potentially serious issue with the hybrid or electric system in the vehicle, and it should be addressed promptly to avoid further damage.

4. Can I continue driving my Cadillac with the OBDII code P1EA5 present?

- It is not recommended to continue driving the vehicle with the code P1EA5 present, as it can lead to further complications and potential drivability issues.

5. How can I diagnose the OBDII code P1EA5 in a Cadillac Hybrid/EV vehicle?

- Diagnosing the code P1EA5 requires a professional OBDII scanner to retrieve the specific fault code and pinpoint the exact issue within the Hybrid/EV Battery Interface Control Module.

6. What are some repair tips for fixing the OBDII code P1EA5 in a Cadillac Hybrid/EV vehicle?

- Repairing the code P1EA5 may involve inspecting and repairing the 4.5V reference circuit, checking for loose connections, and potentially replacing the Hybrid/EV Battery Interface Control Module.

7. Is it safe to attempt repairs on the Hybrid/EV Battery Interface Control Module myself?

- Due to the complexity of the hybrid and electric systems involved, it is recommended to have repairs related to the Hybrid/EV Battery Interface Control Module performed by a qualified automotive technician.

8. How much does it typically cost to repair the OBDII code P1EA5 in a Cadillac Hybrid/EV vehicle?

- The cost of repairing the OBDII code P1EA5 can vary depending on the exact cause of the issue, but it may involve parts replacement and labor costs that can range from a few hundred to over a thousand dollars.

9. Can the OBDII code P1EA5 be reset without repairing the underlying issue in a Cadillac Hybrid/EV vehicle?

- While the code P1EA5 can be cleared using an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent further problems with the vehicle's hybrid or electric system.

10. How can I prevent the OBDII code P1EA5 from recurring in my Cadillac Hybrid/EV vehicle?

- Regular maintenance and inspections of the Hybrid/EV Battery Interface Control Module, as well as addressing any related issues promptly, can help prevent the code P1EA5 from recurring in the future.