AutoCodes – GMC – P1E9F GMC

P1E9F GMC Code - Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit

Quick Answer

The drive motor battery contains 288 cells. Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection. 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: P1E9F GMC indicates Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit.
Common causes: Common causes include Faulty Hybrid/EV Battery Interface Control Module, Hybrid/EV Battery Interface Control Module harness is open or shorted, Hybrid/EV Battery Interface Control Module circuit poor electrical connection.
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 825

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 P1E9F GMC Description

The drive motor battery contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the drive motor battery assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 volts, for a nominal system voltage of 355 volts 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 cell groups. Voltage sense lines are attached to each individual cell group, and these sense lines terminate at a connector located on the top surface of the battery section. A serviceable voltage sense harness joins this connector to a drive motor battery high-voltage interface control module, also located on the top surface of the battery section. The drive motor battery high-voltage interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one drive motor battery high-voltage interface control module located on battery sections one and two, and two drive motor battery high-voltage interface control modules associated with battery section three. The drive motor battery high-voltage interface control module, voltage sense harnesses, battery control 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 P1E9F GMC - Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit - AutoCodes.com — P1E9F GMC Code - Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit

What does this mean?

What are the Possible Causes of the DTC P1E9F GMC?

Faulty Hybrid/EV Battery Interface Control Module
Hybrid/EV Battery Interface Control Module harness is open or shorted
Hybrid/EV Battery Interface Control Module circuit poor electrical connection

How to Fix the DTC P1E9F 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 P1E9F 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 P1E9F GMC Code

1. What are the common symptoms of OBDII code P1E9F in a GMC related to the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit?

- Common symptoms include reduced hybrid system performance, illuminated warning lights on the dashboard, and potential issues with the hybrid/EV battery system.

2. What could be the possible causes of OBDII code P1E9F in a GMC indicating a problem with the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit?

- Possible causes may include a faulty battery interface control module, damaged wiring or connectors in the 3.5 V reference circuit, or issues with the hybrid/EV battery itself.

3. How can I diagnose the OBDII code P1E9F in my GMC related to the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific fault code, inspecting the battery interface control module and related wiring for damage, and testing the 3.5 V reference circuit for proper voltage.

4. Is it safe to continue driving my GMC with an active OBDII code P1E9F indicating a problem with the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit?

- It is not recommended to continue driving the vehicle with this code active, as it can lead to potential damage to the hybrid/EV system and affect overall performance.

5. Can I repair the OBDII code P1E9F related to the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit in my GMC myself?

- While some basic inspections and checks can be done by DIY enthusiasts, repair of this issue often requires specialized knowledge and equipment, so it is advisable to seek professional help.

6. How much does it typically cost to repair OBDII code P1E9F in a GMC associated with the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the battery interface control module, repairing damaged wiring, or addressing issues with the hybrid/EV battery. Costs can range from a few hundred to a few thousand dollars.

7. Are there any preventive maintenance tips to avoid encountering OBDII code P1E9F related to the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit in my GMC?

- Regularly inspecting the hybrid/EV system, following manufacturer's maintenance guidelines, and addressing any warning signs promptly can help prevent issues leading to this fault code.

8. What are the potential long-term effects of ignoring OBDII code P1E9F linked to the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit in my GMC?

- Ignoring this fault code can result in further damage to the hybrid/EV system, decreased fuel efficiency, and potential safety hazards, so it is crucial to address the issue promptly.

9. Can a problem with the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit cause other issues in my GMC besides triggering the OBDII code P1E9F?

- Yes, a problem in this circuit can lead to various other issues such as erratic hybrid system behavior, charging problems, and overall performance degradation in the vehicle.

10. How long does it usually take to repair OBDII code P1E9F related to the Hybrid/EV Battery Interface Control Module 3 5 V Reference Circuit in a GMC?

- Repair times can vary based on the specific cause of the issue, availability of parts, and the workload of the repair shop, but it generally ranges from a few hours to a full day.