AutoCodes – GMC – P1E01 GMC

P1E01 GMC Code - Hybrid/Electric Vehicle Battery 95 Circuit Performance

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: P1E01 GMC indicates Hybrid/Electric Vehicle Battery 95 Circuit Performance.
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 1,074

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 12, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E01 GMC 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 P1E01 GMC - Hybrid/Electric Vehicle Battery 95 Circuit Performance - AutoCodes.com — P1E01 GMC Code - Hybrid/Electric Vehicle Battery 95 Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P1E01 GMC?

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

How to Fix the DTC P1E01 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 P1E01 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 P1E01 GMC Code

1. What are the common symptoms of OBDII code P1E01 in a GMC hybrid/electric vehicle?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential illumination of the check engine light.

2. What are the possible causes of OBDII code P1E01 GMC Hybrid/Electric Vehicle Battery 95 Circuit Performance?

- The code may be triggered by issues such as a faulty battery pack, damaged wiring, poor connections, or problems with the battery control module.

3. How can I diagnose the cause of OBDII code P1E01 in my GMC hybrid/electric vehicle?

- Diagnosis typically involves conducting a thorough inspection of the battery pack, checking the wiring for damages, and using a diagnostic scanner to retrieve specific fault codes.

4. Can I continue driving my GMC hybrid/electric vehicle with OBDII code P1E01 active?

- It is not recommended to drive the vehicle with this code active, as it can lead to further damage to the hybrid system and potentially result in unsafe driving conditions.

5. What are some repair tips for addressing OBDII code P1E01 in a GMC hybrid/electric vehicle?

- Repair tips may include checking and repairing any damaged wiring, ensuring proper connections, testing the battery pack for faults, and resetting the fault code using a diagnostic scanner.

6. Is it possible to reset OBDII code P1E01 in a GMC hybrid/electric vehicle without fixing the underlying issue?

- While you can reset the code temporarily, it is important to address the root cause to prevent the code from reappearing and potentially causing further damage to the vehicle.

7. How much does it typically cost to repair OBDII code P1E01 in a GMC hybrid/electric vehicle?

- Repair costs can vary depending on the exact cause of the code and the extent of the repairs needed. It is recommended to consult with a certified mechanic or dealership for an accurate estimate.

8. Can a DIY enthusiast with automotive knowledge fix OBDII code P1E01 in a GMC hybrid/electric vehicle?

- Some basic repairs, such as checking wiring connections, may be possible for DIY enthusiasts. However, diagnosing and repairing complex issues with the battery system may require specialized tools and expertise.

9. Are there any preventive maintenance measures to avoid OBDII code P1E01 in a GMC hybrid/electric vehicle?

- Regularly inspecting the battery system, keeping connections clean and secure, and following the manufacturer's maintenance schedule can help prevent issues that may trigger this code.

10. Will replacing the entire battery pack be necessary to resolve OBDII code P1E01 in a GMC hybrid/electric vehicle?

- While a faulty battery pack can trigger this code, it is not always necessary to replace the entire pack. Thorough diagnosis is essential to determine if a replacement is needed or if repairs can be made to specific components.