AutoCodes – Generic – P1E5B

P1E5B Code - Hybrid/Electric Vehicle Battery 48 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: P1E5B indicates Hybrid/Electric Vehicle Battery 48 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 811

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 P1E5B 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 P1E5B - Hybrid/Electric Vehicle Battery 48 Circuit - AutoCodes.com — P1E5B Code - Hybrid/Electric Vehicle Battery 48 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E5B?

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

How to Fix the DTC P1E5B?

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 P1E5B 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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Need Help with the Code?

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Information for Specific Makes

P1E5B Buick — Hybrid/Electric Vehicle Battery 48 Circuit
P1E5B Cadillac — Hybrid/Electric Vehicle Battery 48 Circuit
P1E5B Chevrolet — Hybrid/Electric Vehicle Battery 48 Circuit
P1E5B GMC — Hybrid/Electric Vehicle Battery 48 Circuit
P1E5B Saturn — Hybrid/Electric Vehicle Battery 48 Circuit

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 P1E5B Code

1. What are common symptoms of OBDII code P1E5B related to the Hybrid/Electric Vehicle Battery 48 Circuit?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential inability to start the vehicle.

2. What are the possible causes of OBDII code P1E5B indicating an issue with the Hybrid/Electric Vehicle Battery 48 Circuit?

- Possible causes include a faulty battery pack, damaged battery wiring, poor battery connections, or issues with the battery control module.

3. How can I diagnose the Hybrid/Electric Vehicle Battery 48 Circuit issue triggering OBDII code P1E5B?

- Diagnosing this issue typically involves inspecting the battery connections, testing the battery voltage, checking the wiring harness for damage, and using a diagnostic scanner to gather more information.

4. Can I still drive my vehicle with OBDII code P1E5B indicating a problem with the Hybrid/Electric Vehicle Battery 48 Circuit?

- It is not recommended to drive your vehicle with this code active, as it can lead to further damage to the hybrid system components.

5. What repairs are commonly needed to fix OBDII code P1E5B related to the Hybrid/Electric Vehicle Battery 48 Circuit?

- Common repairs include replacing a faulty battery pack, repairing damaged wiring or connections, resetting the battery control module, and performing a system relearn procedure.

6. Is it possible to reset OBDII code P1E5B without addressing the underlying issue with the Hybrid/Electric Vehicle Battery 48 Circuit?

- While you may be able to clear the code temporarily, it is important to address the root cause of the issue to prevent further problems and ensure the proper functioning of the hybrid system.

7. How can I prevent OBDII code P1E5B from recurring in the future after repairing the Hybrid/Electric Vehicle Battery 48 Circuit?

- Regularly inspecting and maintaining the battery pack, checking the wiring for any signs of wear, ensuring secure connections, and following the manufacturer's maintenance schedule can help prevent the code from coming back.

8. Are there any safety precautions to keep in mind when working on the Hybrid/Electric Vehicle Battery 48 Circuit to resolve OBDII code P1E5B?

- Always follow the manufacturer's safety guidelines, disconnect the hybrid battery system properly, use insulated tools when working near high-voltage components, and consider seeking professional assistance if unsure.

9. Can a DIY enthusiast with some automotive knowledge repair OBDII code P1E5B related to the Hybrid/Electric Vehicle Battery 48 Circuit?

- Depending on the specific issue, some DIY repairs may be possible, but working on hybrid/electric vehicle systems can be complex and dangerous. It is recommended to consult the vehicle's service manual or seek professional help.

10. How crucial is it to address OBDII code P1E5B linked to the Hybrid/Electric Vehicle Battery 48 Circuit promptly?

- It is essential to address this code promptly to prevent potential damage to other components, ensure the safety and performance of the hybrid system, and avoid more costly repairs in the future.