AutoCodes – Generic – P3039

P3039 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 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 3,003

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

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?

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 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.

Need more information about the P3039 code?

Need more information on how to fix the P3039 code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P3039 Buick — Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage
P3039 Cadillac — Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage
P3039 Chevrolet — Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage
P3039 GMC — Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage
P3039 Saturn — Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage

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 Code

1. What are the common symptoms of OBDII code P3039?

- Common symptoms include illuminated Check Engine light, reduced hybrid/EV performance, and potential drivability issues.

2. What causes the Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage code (P3039) to trigger?

- The code is usually triggered by a fault in the voltage sensor circuit, such as a wiring issue, poor connection, or a failing voltage sensor.

3. Can driving with OBDII code P3039 cause further damage to the vehicle?

- Continuing to drive with the code may lead to battery performance issues or potential damage to the hybrid/EV system, so it is recommended to address the issue promptly.

4. How can I diagnose OBDII code P3039 related to the Hybrid/EV Battery Interface Control Module?

- Diagnosis typically involves using a scan tool to read the code, inspecting the voltage sensor circuit for any visible issues, and conducting electrical tests as needed.

5. What are some DIY repair tips for fixing OBDII code P3039?

- DIY repair tips may include checking and repairing any damaged wiring, ensuring proper connections, and replacing the voltage sensor if necessary.

6. Is it safe to drive my vehicle with the Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage code active?

- It is generally not recommended to drive the vehicle with this code active, as it may lead to further issues with the hybrid/EV system.

7. Can a failing battery be a potential cause of OBDII code P3039?

- Yes, a failing battery can potentially cause voltage sensor circuit issues and trigger the P3039 code, so it's important to inspect the battery's condition as part of the diagnosis.

8. How can I reset the OBDII code P3039 after making repairs to the Hybrid/EV Battery Interface Control Module?

- The code can be reset using an OBDII scan tool or by disconnecting the vehicle's battery for a few minutes to clear the code from the system.

9. Are there any safety precautions to keep in mind when working on the Hybrid/EV Battery Interface Control Module related to OBDII code P3039?

- It is crucial to follow proper safety procedures when working on high-voltage systems, such as wearing insulated gloves and taking precautions to avoid electrical shock.

10. What should I do if I encounter persistent OBDII code P3039 issues even after repairs?

- If the code persists after repairs, it is recommended to seek assistance from a qualified technician or dealership with expertise in hybrid/EV systems for further diagnosis and repair.