AutoCodes – Buick – P3039 Buick

P3039 Buick Code - Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage

Quick Answer

The hybrid battery contains 192 individual 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: P3039 Buick indicates Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage.
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 891

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 27, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P3039 Buick Description

The hybrid battery contains 192 individual cells. Two cells are welded together in parallel and called a cell group. There are a total of 96 cell groups in the hybrid battery 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 cell groups are joined to form 3 distinct sections. The first 24 battery cell groups make up battery section 1. This section is adjacent to the cowl and contains battery cell groups 73 through 96. The next 28 battery cell groups make up battery section 2. This section is located behind section 1 and contains battery cell groups 45 through 72. The transverse battery section is section number 3 and it contains the remaining 44 battery cell groups 1 through 44. The battery sections also contain two temperature sensors, with one sensor located at each end of the section.
The battery energy control module monitors the voltage of the 96 battery cell groups. The 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 voltage sense harness joins this connector to the battery energy control module.
The battery energy control module contains internal interface control modules that monitor specific cell groups.
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 the hybrid powertrain control module 2 through serial data. The hybrid powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P3039 Buick - Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage - AutoCodes.com — P3039 Buick Code - Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P3039 Buick?

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 P3039 Buick?

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 P3039 Buick 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 P3039 Buick Code

1. What are common symptoms of OBDII code P3039 in a Buick Hybrid/EV vehicle?

- Common symptoms may include poor fuel efficiency, reduced power, illuminated check engine light, and potential issues with the hybrid/EV system.

2. What can cause the Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit to show high voltage in a Buick?

- Potential causes can include a faulty voltage sensor, damaged wiring, a malfunctioning battery control module, or issues with the hybrid/EV battery itself.

3. How can I diagnose the high voltage issue related to the Hybrid/EV Battery Interface Control Module in my Buick?

- Diagnosis typically involves using a scan tool to retrieve the OBDII code P3039, conducting a visual inspection of the wiring, testing the voltage sensor, and checking the battery control module.

4. Is it safe to continue driving my Buick if OBDII code P3039 related to the hybrid/EV system appears?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the hybrid/EV components and potentially cause safety issues.

5. Can I reset the OBDII code P3039 in my Buick Hybrid/EV without addressing the underlying issue?

- While you can clear the code temporarily, it will likely reappear if the root cause of the high voltage issue in the Hybrid/EV Battery Interface Control Module is not addressed.

6. How can I repair the high voltage sensor circuit issue in my Buick Hybrid/EV to resolve OBDII code P3039?

- Repair may involve replacing the faulty voltage sensor, repairing damaged wiring, recalibrating the battery control module, or replacing the hybrid/EV battery if necessary.

7. Are there any preventive maintenance tips to avoid encountering OBDII code P3039 in my Buick Hybrid/EV?

- Regularly inspecting the hybrid/EV system components, maintaining the battery system, and following manufacturer-recommended service intervals can help prevent issues leading to this code.

8. Can a DIY enthusiast tackle the repair of OBDII code P3039 related to the Hybrid/EV system in a Buick?

- While some basic diagnostic steps can be performed by DIY enthusiasts, complex repairs involving the hybrid/EV system may require specialized tools and expertise best handled by a professional technician.

9. What is the typical cost of repairing OBDII code P3039 in a Buick Hybrid/EV at a dealership or repair shop?

- The cost can vary depending on the exact cause of the issue, but repairs related to the Hybrid/EV Battery Interface Control Module can range from a few hundred to over a thousand dollars, including parts and labor.

10. How urgent is it to address OBDII code P3039 in a Buick Hybrid/EV once it appears?

- It is advisable to address the issue promptly to prevent further damage to the hybrid/EV system components and ensure the vehicle operates safely and efficiently.