AutoCodes – GMC – P1E02 GMC

P1E02 GMC Code - Hybrid/Electric Vehicle Battery 95 Circuit Low Voltage

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: P1E02 GMC indicates Hybrid/Electric Vehicle Battery 95 Circuit Low Voltage.
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 816

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 P1E02 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 P1E02 GMC - Hybrid/Electric Vehicle Battery 95 Circuit Low Voltage - AutoCodes.com — P1E02 GMC Code - Hybrid/Electric Vehicle Battery 95 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1E02 GMC?

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

How to Fix the DTC P1E02 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 P1E02 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 P1E02 GMC Code

1. What are the common symptoms of OBDII code P1E02 in a GMC Hybrid/Electric Vehicle?

- Common symptoms include reduced power, poor fuel economy, difficulty starting the vehicle, and illumination of the check engine light.

2. What can cause the Hybrid/Electric Vehicle Battery 95 Circuit Low Voltage code (P1E02) in a GMC?

- Potential causes of this code include a weak or failing hybrid/electric vehicle battery, issues with the battery management system, faulty wiring, or a problem with the battery temperature sensor.

3. How can I diagnose the P1E02 code in my GMC Hybrid/Electric Vehicle?

- Diagnosis typically involves using a professional OBDII scanner to read the code, checking the state of charge of the hybrid/electric vehicle battery, inspecting the battery connections, and testing the battery temperature sensor.

4. Is it safe to continue driving with the P1E02 code present in my GMC Hybrid/Electric Vehicle?

- It is not recommended to drive with this code present, as it can lead to further damage to the battery system and affect the vehicle's performance.

5. Can I repair the P1E02 code in my GMC Hybrid/Electric Vehicle myself?

- While some DIY enthusiasts may attempt to troubleshoot and repair this code, it is recommended to seek professional help from a certified mechanic or dealership due to the complexity of the hybrid/electric vehicle system.

6. How much does it typically cost to fix the Hybrid/Electric Vehicle Battery 95 Circuit Low Voltage code in a GMC?

- The cost of repair can vary depending on the underlying issue causing the code. It is advisable to get a diagnostic evaluation from a qualified technician to determine the exact cost.

7. Are there any maintenance tips to prevent the recurrence of the P1E02 code in my GMC Hybrid/Electric Vehicle?

- Regularly checking the hybrid/electric vehicle battery's health, ensuring proper charging habits, and keeping up with routine maintenance can help prevent the occurrence of this code.

8. Can a low voltage in the hybrid/electric vehicle battery cause other issues besides triggering the P1E02 code?

- Yes, a low voltage condition in the battery can potentially lead to other electrical system malfunctions, reduced performance, and even issues with starting the vehicle.

9. Does the P1E02 code affect the overall safety of driving a GMC Hybrid/Electric Vehicle?

- While the code itself may not pose an immediate safety risk, ignoring it can lead to more severe problems with the vehicle's electrical system and potentially impact its overall safety and reliability.

10. How long does it usually take to repair the Hybrid/Electric Vehicle Battery 95 Circuit Low Voltage code in a GMC?

- The repair time can vary depending on the specific cause of the code and the availability of parts. It is best to consult with a professional technician for a more accurate estimate of the repair duration.