AutoCodes – Generic – P1E8A

P1E8A Code - Hybrid/Electric Vehicle Battery 95 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: P1E8A indicates Hybrid/Electric Vehicle Battery 95 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 826

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 P1E8A 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 P1E8A - Hybrid/Electric Vehicle Battery 95 Circuit - AutoCodes.com — P1E8A Code - Hybrid/Electric Vehicle Battery 95 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E8A?

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

How to Fix the DTC P1E8A?

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 P1E8A 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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Need Help with the Code?

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Information for Specific Makes

P1E8A Buick — Hybrid/Electric Vehicle Battery 95 Circuit
P1E8A Cadillac — Hybrid/Electric Vehicle Battery 95 Circuit
P1E8A Chevrolet — Hybrid/Electric Vehicle Battery 95 Circuit
P1E8A GMC — Hybrid/Electric Vehicle Battery 95 Circuit
P1E8A Saturn — Hybrid/Electric Vehicle Battery 95 Circuit

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 P1E8A Code

1. What are common symptoms associated with OBDII code P1E8A (Hybrid/Electric Vehicle Battery 95 Circuit)?

Common symptoms may include poor hybrid battery performance, reduced fuel efficiency, and possible illumination of the hybrid system warning light.

2. What are possible causes of OBDII code P1E8A?

Possible causes of this code include a fault in the battery 95 circuit, issues with the battery management system, or a problem with the hybrid battery itself.

3. How can I diagnose the OBDII code P1E8A?

Diagnosis typically involves using a professional OBDII scanner to retrieve the specific fault code, checking the hybrid battery connections, and inspecting the battery 95 circuit for any visible damage.

4. Can I still drive my vehicle with OBDII code P1E8A present?

It is not recommended to drive your vehicle extensively with this code present, as it can lead to further damage to the hybrid battery system and potentially affect the overall performance of the vehicle.

5. What are some repair tips for fixing OBDII code P1E8A?

Repair tips may include checking and repairing any damaged wiring in the battery 95 circuit, ensuring proper connections in the hybrid battery system, and resetting the fault code after repairs are made.

6. Is it safe to attempt DIY repairs for OBDII code P1E8A?

While some basic inspections and repairs can be done by DIY enthusiasts, it is recommended to seek professional help when dealing with hybrid/electric vehicle battery issues to avoid causing further damage.

7. How much does it typically cost to repair OBDII code P1E8A?

The cost of repairing this code can vary depending on the specific issue causing it, but it may range from a few hundred to over a thousand dollars, especially if parts of the hybrid battery system need replacement.

8. Can environmental factors contribute to triggering OBDII code P1E8A?

Yes, extreme temperatures, moisture, or physical damage to the battery system can contribute to triggering this fault code.

9. How often should I check the hybrid battery system to prevent OBDII code P1E8A?

Regular maintenance checks, as recommended in your vehicle's manual, can help prevent issues like OBDII code P1E8A. It's a good practice to have the hybrid battery system inspected during routine service appointments.

10. Can OBDII code P1E8A be intermittent or permanent?

This code can be either intermittent or permanent, depending on the underlying issue. It is important to address the problem promptly to prevent further complications with the hybrid battery system.