AutoCodes – GMC – P1E93 GMC

P1E93 GMC Code - Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit

Quick Answer

The drive motor battery contains 288 cells. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection. 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: P1E93 GMC indicates Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection.
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 951

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 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1E93 GMC Description

The drive motor battery contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the drive motor battery assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 volts, for a nominal system voltage of 355 volts 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 cell groups. Voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A serviceable voltage sense harness joins this connector to a drive motor battery high-voltage interface control module, also located on the top surface of the battery section. The drive motor battery high-voltage interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one drive motor battery high-voltage interface control module located on battery sections one and two, and two drive motor battery high-voltage interface control modules associated with battery section three. The drive motor battery high-voltage interface control module, voltage sense harnesses, battery control 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 P1E93 GMC - Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit - AutoCodes.com — P1E93 GMC Code - Hybrid/EV Battery Interface Control Module 1 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1E93 GMC?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC P1E93 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 P1E93 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 P1E93 GMC Code

1. What are common symptoms of OBDII code P1E93 in a GMC Hybrid/EV vehicle?

- Common symptoms include poor fuel efficiency, reduced power, and possible issues with the hybrid system.

2. What could cause the OBDII code P1E93 in a GMC Hybrid/EV vehicle?

- This code is typically triggered by a malfunction in the Hybrid/EV Battery Interface Control Module or issues with the 5V reference circuit.

3. How can I diagnose the OBDII code P1E93 in my GMC Hybrid/EV vehicle?

- Diagnosis often involves using a scan tool to retrieve the specific trouble code and then checking the Hybrid/EV Battery Interface Control Module and related wiring.

4. Is it safe to continue driving with OBDII code P1E93 present in my GMC Hybrid/EV vehicle?

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

5. Can I repair the OBDII code P1E93 in my GMC Hybrid/EV vehicle myself?

- While some may attempt DIY repairs, it is recommended to seek professional help due to the complexity of the hybrid system and the importance of proper diagnosis and repair.

6. How much does it typically cost to repair OBDII code P1E93 in a GMC Hybrid/EV vehicle?

- Repair costs can vary depending on the exact cause of the issue, but it may involve replacing the Hybrid/EV Battery Interface Control Module or repairing the 5V reference circuit.

7. Are there any preventive measures I can take to avoid OBDII code P1E93 in my GMC Hybrid/EV vehicle?

- Regular maintenance and inspections of the hybrid system can help prevent issues that may lead to this trouble code.

8. Can a faulty battery be the cause of OBDII code P1E93 in a GMC Hybrid/EV vehicle?

- While a faulty battery can sometimes trigger related issues, the specific cause of this code is more likely related to the Hybrid/EV Battery Interface Control Module or the 5V reference circuit.

9. Will resetting the OBDII code P1E93 in my GMC Hybrid/EV vehicle make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear.

10. How long does it take to repair OBDII code P1E93 in a GMC Hybrid/EV vehicle?

- Repair times can vary depending on the exact cause of the issue and the availability of parts, but it is recommended to consult with a professional technician for an accurate estimate.