AutoCodes – Saturn – P3044 Saturn

P3044 Saturn Code - Hybrid/EV Battery Interface Control Module 12 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: P3044 Saturn indicates Hybrid/EV Battery Interface Control Module 12 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 1,022

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 May 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P3044 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 P3044 Saturn - Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit High Voltage - AutoCodes.com — P3044 Saturn Code - Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P3044 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 P3044 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 P3044 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.

Need more information about the P3044 Saturn code?

Need more information on how to fix the P3044 Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P3044 Saturn Code

1. What does the OBDII code P3044 mean on a Saturn?

It indicates an issue with the Hybrid/EV Battery Interface Control Module 12 Voltage Sensor Circuit, specifically a high voltage reading.

2. What are the common symptoms of code P3044 on a Saturn?

Symptoms include illuminated warning lights (like the check engine light or hybrid system warning), reduced fuel efficiency, or limited hybrid system functionality.

3. What causes the P3044 code to appear?

Common causes include a faulty voltage sensor, damaged wiring or connectors in the circuit, a malfunctioning hybrid battery interface control module, or software issues.

4. Can driving with a P3044 code damage my Saturn?

Driving with this code may result in further damage to the hybrid system and reduced performance. Itâ€™s best to address the issue promptly.

5. How is the P3044 code diagnosed?

A technician will inspect the wiring and connectors, test the voltage sensor, and use a scan tool to monitor the data from the hybrid battery interface control module.

6. How do you fix the P3044 code on a Saturn?

Repairs may involve replacing the faulty voltage sensor, repairing or replacing damaged wiring, or reprogramming or replacing the hybrid battery interface control module.

7. Can a dead 12V battery trigger the P3044 code?

While the 12V battery itself is not the direct cause, issues with the voltage sensor monitoring the circuit could potentially involve the 12V system.

8. How much does it cost to fix the P3044 code on a Saturn?

Repair costs vary, but replacing a voltage sensor or repairing wiring typically ranges from $150 to $500. Replacing the control module may cost more.

9. Can a software update fix the P3044 code?

In some cases, a software update for the hybrid battery interface control module may resolve the issue if itâ€™s caused by a programming bug.

10. Is the P3044 code unique to Saturn hybrid vehicles?

This code is specific to vehicles with hybrid or EV systems, and it may appear in other brands, but the diagnosis and repair process can vary by manufacturer.