AutoCodes – Saturn – P3038 Saturn

P3038 Saturn Code - Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit Low 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: P3038 Saturn indicates Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit Low 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 1,047

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 P3038 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 P3038 Saturn - Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit Low Voltage - AutoCodes.com — P3038 Saturn Code - Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P3038 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 P3038 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 P3038 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 P3038 Saturn code?

Need more information on how to fix the P3038 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 P3038 Saturn Code

1. What are the common symptoms of OBDII code P3038 in a Saturn Hybrid/EV vehicle?

- Common symptoms of this code may include poor fuel efficiency, reduced power, and potentially a check engine light illuminated on the dashboard.

2. What could cause the Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit Low Voltage error in a Saturn?

- The error code P3038 in a Saturn Hybrid/EV is typically caused by issues with the battery interface control module, a faulty voltage sensor, loose electrical connections, or a weak hybrid battery.

3. How serious is the P3038 error code in a Saturn Hybrid/EV?

- While the vehicle may still be operable with this error code, it is important to address it promptly to prevent further damage to the hybrid system and ensure optimal performance.

4. Is it safe to continue driving with the P3038 code present in a Saturn Hybrid/EV?

- It is generally not recommended to drive with the P3038 code present, as it can lead to decreased fuel efficiency and potential performance issues. It is best to have the issue diagnosed and repaired as soon as possible.

5. Can I repair the Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit Low Voltage issue in my Saturn at home?

- Repairing the P3038 code may require specialized tools and knowledge of hybrid vehicle systems. It is recommended to have a qualified mechanic or dealership address the issue to ensure proper diagnosis and repair.

6. What are some tips for troubleshooting the P3038 code in a Saturn Hybrid/EV?

- Some tips for troubleshooting the P3038 code include checking the hybrid battery connections, inspecting the voltage sensor circuit for damage, and ensuring all electrical connections are secure.

7. How much does it typically cost to repair the Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit Low Voltage error in a Saturn?

- The cost of repairing the P3038 code can vary depending on the specific issue causing the error. It is recommended to obtain a diagnostic from a professional to determine the exact cost of repair.

8. Can a DIY enthusiast with automotive experience fix the P3038 error in a Saturn Hybrid/EV?

- While some experienced DIY enthusiasts may be able to address simple electrical issues, diagnosing and repairing the complex hybrid system error like P3038 is best left to trained professionals due to the specialized nature of the repair.

9. Will resetting the OBDII system clear the P3038 error code in a Saturn Hybrid/EV?

- While resetting the OBDII system may temporarily clear the error code, it is likely to return if the underlying issue causing the P3038 code is not addressed and repaired.

10. How can regular maintenance help prevent the P3038 error in a Saturn Hybrid/EV?

- Regular maintenance, including checking the hybrid system components, ensuring proper electrical connections, and monitoring the hybrid battery health, can help prevent issues like the P3038 code from occurring in a Saturn Hybrid/EV vehicle.