AutoCodes – Saturn – P3039 Saturn

P3039 Saturn 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 Saturn 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 1,379
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 27, 2020
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Code P3039 Saturn 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 Saturn - Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage - AutoCodes.com
P3039 Saturn Code - Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit High Voltage

What are the Possible Causes of the DTC P3039 Saturn?

  • 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 Saturn?

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 Saturn 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 Saturn Code

1. What does the OBDII code P3039 mean on a Saturn?

P3039 indicates a problem with the Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit, specifically detecting high voltage.

2. What are the symptoms of code P3039 on a Saturn?

Common symptoms include reduced hybrid/EV performance, a warning message or check engine light on the dashboard, and potential loss of battery charging functionality.

3. What causes the P3039 code to appear?

The code can be triggered by a faulty voltage sensor, damaged wiring or connectors, a failed battery interface control module, or issues within the hybrid/EV battery itself.

4. Can driving with code P3039 damage my Saturn?

Yes, continuing to drive with this code may lead to further damage to the hybrid/EV system, reduced fuel efficiency, or even complete loss of power.

5. How do I diagnose the P3039 code on my Saturn?

Diagnosis involves using a scan tool to confirm the code, inspecting the wiring and connectors for damage or corrosion, and testing the voltage sensor and control module for proper operation.

6. How can I fix the P3039 code on my Saturn?

Repairs may include replacing a faulty voltage sensor, repairing damaged wiring or connectors, or replacing the battery interface control module if defective.

7. Is the P3039 code specific to Saturn hybrid/EV models?

While P3039 is a generic OBDII code, it specifically relates to hybrid/EV systems and is commonly associated with Saturn hybrid/EV vehicles.

8. How much does it cost to repair the P3039 code on a Saturn?

Repair costs vary depending on the issue but can range from $100 for wiring repairs to over $1,000 if the control module or hybrid battery needs replacement.

9. Can a weak hybrid/EV battery cause the P3039 code?

Yes, a weak or failing hybrid/EV battery can contribute to voltage irregularities, which may trigger the P3039 code.

10. Should I take my Saturn to a specialist for the P3039 code?

Yes, hybrid/EV systems are complex, and a qualified technician with experience in hybrid/EV vehicles is recommended for proper diagnosis and repair.

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