AutoCodes – Generic – P1E89

P1E89 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 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 914

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

What does this mean?

What are the Possible Causes of the DTC P1E89?

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

How to Fix the DTC P1E89?

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 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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Information for Specific Makes

P1E89 Buick — Hybrid/Electric Vehicle Battery 94 Circuit
P1E89 Cadillac — Hybrid/Electric Vehicle Battery 94 Circuit
P1E89 Chevrolet — Hybrid/Electric Vehicle Battery 94 Circuit
P1E89 GMC — Hybrid/Electric Vehicle Battery 94 Circuit
P1E89 Saturn — Hybrid/Electric Vehicle Battery 94 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 P1E89 Code

1. What are the common symptoms of OBDII code P1E89 (Hybrid/Electric Vehicle Battery 94 Circuit)?

- Common symptoms include reduced hybrid system performance, decreased fuel efficiency, and potential failure of the high voltage battery.

2. What are the possible causes of OBDII code P1E89?

- The code P1E89 can be triggered by issues such as a faulty battery pack, damaged battery cells, wiring problems, or a malfunctioning battery management system.

3. How can I diagnose the cause of OBDII code P1E89?

- Diagnosing the cause of P1E89 typically involves conducting a thorough inspection of the high voltage battery system, checking the battery cells, inspecting wiring connections, and using diagnostic tools to scan for specific faults.

4. What should I do if I encounter code P1E89 on my hybrid or electric vehicle?

- If you encounter code P1E89, it is recommended to have the vehicle inspected by a qualified technician with experience in hybrid and electric vehicle systems to accurately diagnose and repair the issue.

5. Can I continue driving my vehicle with OBDII code P1E89 present?

- It is not advisable to continue driving the vehicle with code P1E89 present, as it can lead to further damage to the high voltage battery system and potentially compromise the safety and performance of the vehicle.

6. Are there any repair tips for addressing OBDII code P1E89?

- Repairing code P1E89 may involve replacing damaged battery cells, repairing faulty wiring connections, resetting the battery management system, or recalibrating the high voltage battery system as recommended by the vehicle manufacturer.

7. How much does it typically cost to repair OBDII code P1E89?

- The cost of repairing OBDII code P1E89 can vary depending on the specific cause of the issue, the extent of the damage, and the labor rates of the repair facility. It is advisable to obtain a diagnostic assessment to determine the exact cost.

8. Can I reset OBDII code P1E89 myself?

- Resetting OBDII code P1E89 may not permanently resolve the underlying issue causing the fault code. It is recommended to have a professional technician diagnose and repair the problem to ensure proper functionality of the high voltage battery system.

9. Is OBDII code P1E89 specific to certain hybrid or electric vehicle models?

- OBDII code P1E89 (Hybrid/Electric Vehicle Battery 94 Circuit) is a generic code that can appear in various hybrid and electric vehicle models equipped with OBDII systems.

10. How can I prevent OBDII code P1E89 from occurring in the future?

- To help prevent code P1E89, it is essential to adhere to the recommended maintenance schedule for your vehicle, regularly inspect the high voltage battery system, and address any minor issues promptly before they escalate into larger problems.