AutoCodes – GMC – P1E89 GMC

P1E89 GMC 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 GMC 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 720

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

What does this mean?

What are the Possible Causes of the DTC P1E89 GMC?

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

How to Fix the DTC P1E89 GMC?

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 GMC 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 GMC Code

1. What are common symptoms of OBDII code P1E89 GMC?

Common symptoms of code P1E89 may include reduced electric vehicle range, poor hybrid system performance, and a decrease in overall fuel efficiency.

2. What causes OBDII code P1E89 GMC to appear?

This code is typically triggered by issues related to the hybrid/electric vehicle battery 94 circuit, such as a malfunctioning battery module or wiring problems.

3. How serious is OBDII code P1E89 GMC?

Code P1E89 should be addressed promptly as it can affect the performance and efficiency of the hybrid/electric system in your vehicle. Ignoring the issue may lead to further complications.

4. Can I continue driving with OBDII code P1E89 GMC?

It is not recommended to continue driving with this code present, as it can impact the overall operation of your hybrid or electric vehicle. It is advisable to have the issue diagnosed and repaired as soon as possible.

5. How can I diagnose OBDII code P1E89 GMC?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the specific details of the fault and then inspecting the hybrid/electric vehicle battery 94 circuit components for any visible damage or issues.

6. What are some repair tips for addressing OBDII code P1E89 GMC?

Repair tips may include checking and repairing any damaged wiring, replacing faulty battery modules, resetting the system, and ensuring proper connections in the hybrid/electric vehicle battery 94 circuit.

7. Is it possible to reset OBDII code P1E89 GMC without repairs?

While clearing the code may temporarily turn off the warning light, it is important to address the underlying issue causing the fault code to prevent further problems with the hybrid/electric system.

8. How much does it cost to repair OBDII code P1E89 GMC?

The cost of repairs for this code can vary depending on the extent of the issue and the specific components that need to be replaced or repaired. It is advisable to consult a professional for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P1E89 GMC?

While some aspects of diagnosing and repairing this code may be possible for experienced DIY enthusiasts, dealing with the complex hybrid/electric vehicle system components may require specialized knowledge and tools best handled by professionals.

10. How can I prevent OBDII code P1E89 GMC from reoccurring?

Regular maintenance of the hybrid/electric vehicle system, including checking the battery modules, wiring, and connections, can help prevent issues that may trigger code P1E89 from reoccurring.