AutoCodes – Saturn – P1E8A Saturn

P1E8A Saturn 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 Saturn 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 827

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

What does this mean?

What are the Possible Causes of the DTC P1E8A Saturn?

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

How to Fix the DTC P1E8A Saturn?

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 Saturn 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 P1E8A Saturn Code

1. What does the OBDII code P1E8A mean on a Saturn?

The P1E8A code indicates an issue with the Hybrid/Electric Vehicle Battery 95 Circuit, which involves the voltage or communication within the high-voltage battery system.

2. What are the common symptoms of the P1E8A code?

Symptoms may include the check engine light or hybrid system warning light turning on, reduced vehicle performance, or the inability to start the vehicle.

3. What causes the P1E8A code to appear?

Possible causes include a faulty high-voltage battery module, damaged wiring or connectors in the battery circuit, or issues with the battery energy control module.

4. Is the P1E8A code serious?

Yes, this code can affect the performance of the hybrid or electric system and might leave the vehicle in a reduced power mode, potentially leading to drivability issues.

5. How can I diagnose the P1E8A code?

Diagnosis typically involves scanning for additional trouble codes, inspecting the high-voltage battery circuit wiring and connectors, and testing the battery energy control module.

6. Can I continue driving with the P1E8A code?

Itâ€™s not recommended to drive with this code, as it could lead to further damage to the high-voltage battery system or leave you stranded if the vehicle loses power.

7. How is the P1E8A code fixed?

Repairs may include replacing a damaged high-voltage battery module, repairing or replacing faulty wiring and connectors, or reprogramming or replacing the battery energy control module.

8. Can a software update fix the P1E8A code?

In some cases, a software update for the battery energy control module may resolve the issue, but this depends on the specific problem diagnosed.

9. How much does it cost to fix the P1E8A code?

Repair costs vary based on the exact issue, but replacing a high-voltage battery module or control module can range from several hundred to several thousand dollars.

10. Can a dead 12V battery cause the P1E8A code?

While unlikely, a weak or dead 12V battery can sometimes trigger communication issues, so itâ€™s worth checking the 12V battery's condition as part of the diagnosis.