AutoCodes – GMC – P1E88 GMC

P1E88 GMC Code - Hybrid/Electric Vehicle Battery 93 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: P1E88 GMC indicates Hybrid/Electric Vehicle Battery 93 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 877

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 P1E88 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 P1E88 GMC - Hybrid/Electric Vehicle Battery 93 Circuit - AutoCodes.com — P1E88 GMC Code - Hybrid/Electric Vehicle Battery 93 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E88 GMC?

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

How to Fix the DTC P1E88 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 P1E88 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 P1E88 GMC Code

1. What are the common symptoms of OBDII code P1E88 in a GMC Hybrid/Electric Vehicle?

- Common symptoms include reduced hybrid/electric battery performance, warning lights on the dashboard, and decreased fuel efficiency.

2. What can cause the OBDII code P1E88 in a GMC Hybrid/Electric Vehicle?

- The code P1E88 is typically triggered by issues with the hybrid/electric vehicle battery 93 circuit, such as wiring faults, battery cell degradation, or a faulty battery management system.

3. How can I diagnose the OBDII code P1E88 in my GMC Hybrid/Electric Vehicle?

- Diagnosis involves using an OBDII scanner to retrieve the specific fault code, inspecting the battery 93 circuit for any visible damage, and testing the battery cells for proper voltage and capacity.

4. Is it safe to continue driving with the OBDII code P1E88 illuminated in my GMC Hybrid/Electric Vehicle?

- It is not recommended to drive with the code P1E88 active, as it can lead to further damage to the hybrid/electric battery system and potentially affect the vehicle's performance and safety.

5. How can I repair the OBDII code P1E88 in my GMC Hybrid/Electric Vehicle?

- Repair options may include repairing or replacing damaged wiring in the battery 93 circuit, replacing faulty battery cells, or recalibrating the battery management system.

6. Can I reset the OBDII code P1E88 in my GMC Hybrid/Electric Vehicle by disconnecting the battery?

- Disconnecting the battery may temporarily clear the code, but it is not a recommended long-term solution. It is best to address the root cause of the issue to prevent the code from reoccurring.

7. Are there any maintenance tips to prevent the OBDII code P1E88 in a GMC Hybrid/Electric Vehicle?

- Regularly inspecting the hybrid/electric battery system, performing scheduled maintenance, and avoiding deep discharges can help prevent issues that may trigger the P1E88 fault code.

8. How long does it typically take to repair the OBDII code P1E88 in a GMC Hybrid/Electric Vehicle?

- The repair time can vary depending on the extent of the issue and the availability of parts. It is recommended to consult a certified technician for an accurate estimate.

9. Can the OBDII code P1E88 in a GMC Hybrid/Electric Vehicle cause other problems if left unaddressed?

- Ignoring the P1E88 fault code can lead to further damage to the hybrid/electric battery system, reduced performance, and potential safety hazards. It is important to address the issue promptly.

10. Is it necessary to visit a dealership for repairs related to the OBDII code P1E88 in a GMC Hybrid/Electric Vehicle?

- While a dealership may have specialized knowledge and tools for hybrid/electric vehicle repairs, independent repair shops with experience in hybrid systems can also effectively diagnose and repair the issue.