AutoCodes – Chevrolet – P1E55 Chevrolet

P1E55 Chevrolet Code - Hybrid/Electric Vehicle Battery 42 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: P1E55 Chevrolet indicates Hybrid/Electric Vehicle Battery 42 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 800

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 P1E55 Chevrolet 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 P1E55 Chevrolet - Hybrid/Electric Vehicle Battery 42 Circuit - AutoCodes.com — P1E55 Chevrolet Code - Hybrid/Electric Vehicle Battery 42 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E55 Chevrolet?

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

How to Fix the DTC P1E55 Chevrolet?

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 P1E55 Chevrolet 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 P1E55 Chevrolet Code

1. What are common symptoms of OBDII code P1E55 in a Chevrolet hybrid/electric vehicle?

- Common symptoms include poor fuel economy, reduced power, difficulty starting the vehicle, and warning lights on the dashboard.

2. What does the OBDII code P1E55 Chevrolet Hybrid/Electric Vehicle Battery 42 Circuit indicate?

- This code indicates a malfunction or issue with the circuit related to the hybrid/electric vehicle battery, specifically Circuit 42.

3. What are possible causes of the P1E55 code in a Chevrolet hybrid/electric vehicle?

- Possible causes include a faulty battery pack, damaged wiring or connectors in Circuit 42, issues with the battery management system, or a malfunctioning battery control module.

4. How can I diagnose the P1E55 code in my Chevrolet hybrid/electric vehicle?

- Diagnosing the issue may require using a diagnostic scan tool to read the code, inspecting the battery pack and related components, and testing the circuitry for continuity and proper voltage.

5. Can I continue driving my Chevrolet hybrid/electric vehicle with the P1E55 code present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the battery system and potentially unsafe driving conditions.

6. How can I repair the P1E55 code in my Chevrolet hybrid/electric vehicle?

- Repairing the issue may involve replacing the faulty battery pack, repairing or replacing damaged wiring or connectors in Circuit 42, resetting the battery management system, or reprogramming the battery control module.

7. Is it safe to attempt repairs on the hybrid/electric vehicle battery system myself?

- Due to the high voltage and complexity of hybrid/electric vehicle battery systems, it is recommended to seek professional help or service from a certified technician to safely diagnose and repair the issue.

8. How much does it cost to repair the P1E55 code in a Chevrolet hybrid/electric vehicle?

- The cost of repairs can vary depending on the specific issue causing the code, the extent of the damage, and the labor rates of the service provider. It's advisable to get a diagnostic assessment for an accurate estimate.

9. Can regular maintenance help prevent the occurrence of the P1E55 code in a Chevrolet hybrid/electric vehicle?

- Regular maintenance, such as checking the battery system, monitoring for warning signs, and following the manufacturer's recommended service schedule, can help prevent issues that may trigger the P1E55 code.

10. Are there any recalls or service bulletins related to the P1E55 code in Chevrolet hybrid/electric vehicles?

- It's recommended to check with Chevrolet dealerships or the manufacturer's website for any recalls or service bulletins related to the P1E55 code and specific vehicle models to stay informed about any potential updates or remedies.