AutoCodes – GMC – P3038 GMC

P3038 GMC 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 GMC 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 1,137

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

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 GMC?

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 GMC 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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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 GMC Code

1. What are the common symptoms of OBDII code P3038 in a GMC vehicle?

- Common symptoms of this code may include poor fuel economy, reduced engine performance, and the illumination of the check engine light.

2. What are some possible causes of the Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit Low Voltage code in a GMC vehicle?

- Possible causes may include a faulty Hybrid/EV battery interface control module, a damaged voltage sensor, wiring issues, or a weak battery.

3. How can I diagnose the OBDII code P3038 in my GMC vehicle?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the trouble code, inspecting the Hybrid/EV battery interface control module and related components, and checking the wiring for any damage or loose connections.

4. Can I continue driving my GMC vehicle with the P3038 trouble code?

- It is not recommended to drive your vehicle with this code as it can lead to further damage and potentially affect the vehicle's performance. It is advisable to address the issue promptly.

5. What are some repair tips for fixing the Hybrid/EV Battery Interface Control Module 11 Voltage Sensor Circuit Low Voltage code in a GMC vehicle?

- Repair tips may include checking and replacing the voltage sensor, repairing any damaged wiring, resetting the trouble code after repairs, and ensuring proper connections.

6. Is it possible to clear the OBDII code P3038 in a GMC vehicle without fixing the underlying issue?

- While it is possible to clear the code with a diagnostic scanner, it is not recommended as the issue may persist and cause further problems if left unresolved.

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

- The cost of repair can vary depending on the extent of the issue, the parts needed for replacement, and labor costs. It is advisable to consult a professional mechanic for an accurate estimate.

8. Are there any preventative measures to avoid the recurrence of the P3038 trouble code in my GMC vehicle?

- Regular maintenance, such as checking the battery health, inspecting wiring for damage, and addressing any warning signs promptly, can help prevent the recurrence of this trouble code.

9. Can a DIY enthusiast with automotive knowledge fix the OBDII code P3038 in a GMC vehicle?

- Depending on the skill level and experience of the individual, some DIY enthusiasts may be able to address this code themselves. However, it is recommended to consult a professional mechanic for complex issues.

10. Does the OBDII code P3038 in a GMC vehicle pose any safety risks to the driver or passengers?

- While this code may not directly pose immediate safety risks, it can impact the vehicle's performance and fuel efficiency. Addressing the issue promptly is important to ensure the vehicle's proper operation.