AutoCodes – Buick – P1E5D Buick

P1E5D Buick 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 Buick 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 774

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

What does this mean?

What are the Possible Causes of the DTC P1E5D Buick?

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

How to Fix the DTC P1E5D Buick?

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 Buick 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 Buick Code

1. What are the common symptoms of OBDII code P1E5D in a Buick Hybrid/Electric Vehicle related to the Hybrid/Electric Vehicle Battery 50 Circuit?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential warning lights on the dashboard.

2. What are the possible causes of OBDII code P1E5D in a Buick Hybrid/Electric Vehicle?

- The code P1E5D may indicate issues such as a faulty battery pack, damaged wiring in the Hybrid/Electric Vehicle Battery 50 Circuit, or problems with the battery control module.

3. How can I diagnose the OBDII code P1E5D in my Buick Hybrid/Electric Vehicle?

- Diagnosis typically involves using a professional OBDII scanner to read the code, checking the battery connections, inspecting the wiring harness for any damage, and testing the battery pack's voltage.

4. Can I continue driving my Buick Hybrid/Electric Vehicle with the OBDII code P1E5D present?

- It is not recommended to drive the vehicle with the code unresolved, as it can lead to further damage to the hybrid system and potentially cause safety hazards.

5. What are some repair tips for fixing OBDII code P1E5D in a Buick Hybrid/Electric Vehicle?

- Repair tips may include checking and repairing any damaged wiring, replacing the battery pack if necessary, and resetting the fault code with a diagnostic tool after completing the repairs.

6. How much does it typically cost to repair OBDII code P1E5D in a Buick Hybrid/Electric Vehicle?

- The cost of repairs can vary depending on the specific issue causing the code, but it may range from a few hundred to a few thousand dollars, especially if the battery pack needs to be replaced.

7. Are there any preventative maintenance measures to avoid OBDII code P1E5D in a Buick Hybrid/Electric Vehicle?

- Regularly inspecting the battery connections, keeping the battery pack in good condition, and following the manufacturer's maintenance schedule can help prevent issues leading to the P1E5D code.

8. How long does it take to repair OBDII code P1E5D in a Buick Hybrid/Electric Vehicle?

- The repair time can vary depending on the complexity of the issue, but it may take a few hours to a full day for diagnosis and repairs to be completed by a qualified technician.

9. Can I reset the OBDII code P1E5D in my Buick Hybrid/Electric Vehicle without making any repairs?

- While you can clear the fault code with an OBDII scanner, it is essential to address the underlying issue causing the code to prevent it from reoccurring and potentially causing further damage.

10. Should I attempt to repair OBDII code P1E5D in my Buick Hybrid/Electric Vehicle myself, or should I seek professional help?

- Due to the complexity of hybrid/electric vehicle systems and the potential safety risks involved, it is recommended to seek assistance from a qualified mechanic or dealership specializing in hybrid vehicle repairs to address the P1E5D code effectively.