AutoCodes – GMC – P1EA5 GMC

P1EA5 GMC 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 GMC 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 830

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 GMC 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 GMC - Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit - AutoCodes.com — P1EA5 GMC 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 GMC?

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 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 P1EA5 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 P1EA5 GMC Code

1. What are common symptoms of OBDII code P1EA5 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit?

Symptoms may include loss of power, decreased fuel efficiency, illuminated warning lights (such as the check engine light), and difficulties starting the vehicle.

2. What are potential causes of OBDII code P1EA5 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit?

Possible causes include a faulty battery interface control module, damaged wiring or connectors in the 4 5 V reference circuit, or issues with the hybrid or electric vehicle battery system.

3. How can I diagnose the OBDII code P1EA5 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit?

Diagnosis typically involves using a scan tool to retrieve the specific fault code, conducting a visual inspection of wiring and connectors, and performing electrical tests to pinpoint the issue within the 4 5 V reference circuit.

4. Are there any safety precautions to keep in mind when dealing with OBDII code P1EA5 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit?

Yes, it is important to follow proper safety procedures when working with high-voltage systems in hybrid or electric vehicles. Always consult the vehicle's service manual and take necessary precautions to avoid electrical shocks or hazards.

5. What are some repair tips for resolving OBDII code P1EA5 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit?

Repair tips may include checking and repairing any damaged wiring or connectors, replacing the faulty battery interface control module, and ensuring proper connection and functionality of the 4 5 V reference circuit components.

6. Can OBDII code P1EA5 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit affect the vehicle's drivability?

Yes, this code can impact the drivability of the vehicle by causing performance issues, decreased power output, and potential starting difficulties. It is recommended to address the issue promptly to prevent further damage.

7. Is it possible to reset the OBDII code P1EA5 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit without repairing the underlying issue?

While clearing the fault code may temporarily turn off the check engine light, the root cause of the problem will still persist. It is crucial to diagnose and repair the issue to ensure proper vehicle operation.

8. How does the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit work in a GMC vehicle?

The 4 5 V reference circuit is a crucial component that provides a stable voltage reference for various systems within the hybrid or electric vehicle, helping to regulate and monitor battery performance and overall vehicle operation.

9. Can extreme weather conditions impact the occurrence of OBDII code P1EA5 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit?

Yes, extreme temperatures or weather conditions can sometimes exacerbate electrical issues in the vehicle, potentially leading to faults in the 4 5 V reference circuit. Proper maintenance and care can help mitigate such risks.

10. How can regular maintenance and inspection help prevent OBDII code P1EA5 in a GMC related to the Hybrid/EV Battery Interface Control Module 4 5 V Reference Circuit?

Regular maintenance, including checking and servicing the hybrid or electric vehicle battery system, inspecting wiring and connectors, and monitoring overall vehicle performance, can help detect and address potential issues before they result in OBDII fault codes like P1EA5.