AutoCodes – Cadillac – P1E88 Cadillac

P1E88 Cadillac 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 Cadillac 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 912

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

What does this mean?

What are the Possible Causes of the DTC P1E88 Cadillac?

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

How to Fix the DTC P1E88 Cadillac?

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 Cadillac 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 Cadillac Code

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

- Common symptoms include reduced driving range, poor battery performance, and warning lights on the dashboard related to the hybrid/electric system.

2. What could be causing OBDII code P1E88 in a Cadillac Hybrid/Electric Vehicle?

- The code P1E88 typically points to a fault in the Hybrid/Electric Vehicle Battery 93 Circuit, which could be due to a damaged battery cell, wiring issues, or a malfunctioning battery management system.

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

- Diagnosis involves using a professional OBDII scan tool to retrieve the specific fault codes, inspecting the battery connections and wiring, and testing the battery cells for proper voltage and health.

4. Can I continue driving my Cadillac with OBDII code P1E88 present?

- It is not recommended to continue driving the vehicle with the code present, as it can lead to further damage to the hybrid/electric system and potentially leave you stranded.

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

- Repairing the code may involve replacing a faulty battery cell, repairing damaged wiring, resetting the battery management system, or recalibrating the hybrid/electric system components.

6. Is it safe to attempt DIY repairs for OBDII code P1E88 in a Cadillac Hybrid/Electric Vehicle?

- Due to the complexity and high voltage associated with hybrid/electric vehicle systems, it is recommended to seek professional help for diagnosing and repairing OBDII code P1E88.

7. How much does it cost to fix OBDII code P1E88 in a Cadillac Hybrid/Electric Vehicle?

- The cost of fixing OBDII code P1E88 can vary depending on the exact cause of the issue, but it may involve parts replacement, labor costs, and potential diagnostic fees from a qualified technician.

8. Will resetting the OBDII code P1E88 clear the issue in my Cadillac Hybrid/Electric Vehicle?

- Resetting the code may temporarily clear the warning lights, but it will not fix the underlying issue causing OBDII code P1E88. It is important to address the root cause of the problem for a permanent solution.

9. Are there any maintenance tips to prevent OBDII code P1E88 in a Cadillac Hybrid/Electric Vehicle?

- Regularly inspecting the hybrid/electric system components, following the manufacturer's maintenance schedule, and avoiding overcharging or deep discharging the battery can help prevent issues like OBDII code P1E88.

10. Can OBDII code P1E88 in a Cadillac Hybrid/Electric Vehicle affect overall vehicle performance?

- Yes, OBDII code P1E88 can impact the overall performance and efficiency of the vehicle, as it directly relates to the health and functionality of the hybrid/electric battery system.