AutoCodes – Saturn – P1E89 Saturn

P1E89 Saturn Code - Hybrid/Electric Vehicle Battery 94 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: P1E89 Saturn indicates Hybrid/Electric Vehicle Battery 94 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 752

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 P1E89 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 P1E89 Saturn - Hybrid/Electric Vehicle Battery 94 Circuit - AutoCodes.com — P1E89 Saturn Code - Hybrid/Electric Vehicle Battery 94 Circuit

What does this mean?

What are the Possible Causes of the DTC P1E89 Saturn?

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

How to Fix the DTC P1E89 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 P1E89 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 P1E89 Saturn Code

What does the OBDII code P1E89 indicate for a Saturn vehicle?

The OBDII code P1E89 indicates a problem with the Hybrid/Electric Vehicle Battery 94 Circuit, which is related to the battery management system.

What symptoms might I notice if my vehicle is triggering the P1E89 code?

Common symptoms include reduced engine power, warning lights on the dashboard (such as the battery or check engine light), and potential issues with battery charging or performance.

What could cause the P1E89 code to trigger in a Saturn?

Possible causes include a faulty battery management system, damaged wiring or connectors in the battery circuit, or issues with the hybrid/electric battery itself.

How can I diagnose the P1E89 code effectively?

Begin with a visual inspection of the battery circuit for any damaged wiring or loose connections, then use a scan tool to check for additional codes and monitor battery performance.

What repairs are typically needed to fix the P1E89 code?

Repairs may involve replacing damaged wiring, fixing or replacing the battery management system, or servicing the hybrid/electric battery if itâ€™s found to be faulty.

Can I continue to drive my vehicle with the P1E89 code?

While it may be possible to drive with this code, it is not advisable as it could lead to reduced performance and potential damage to the hybrid/electric system.

Should I reset the code after repairs?

Yes, after completing the necessary repairs, you should reset the code using an OBDII scanner and then monitor the vehicle to see if the code reappears.

Is this code specific to Saturn vehicles?

While the P1E89 code may appear in Saturn vehicles, it is part of the standardized OBDII codes and can be relevant to other hybrid or electric vehicles as well.

What is the estimated cost to fix the P1E89 code?

Repair costs can vary widely depending on the exact issue but may range from a few hundred to several thousand dollars, especially if the hybrid battery needs replacement.