AutoCodes – Chevrolet – U3504 Chevrolet

U3504 Chevrolet Code - Control Module Input Power 'B' Circuit Range/Performance

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Faulty Control Module setting the code, Control Module harness is open or shorted, 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: U3504 Chevrolet indicates Control Module Input Power 'B' Circuit Range/Performance.
Common causes: Common causes include Faulty Control Module setting the code, Control Module harness is open or shorted, 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 706

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Jun 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U3504 Chevrolet Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. With the ignition is ON, the Diagnostic Trouble Code (DTC) will set when the control module or sensor detects a system voltage of less than approximately 9 V for approximately 5 s.

OBDII Code U3504 Chevrolet - Control Module Input Power 'B' Circuit Range/Performance - AutoCodes.com — U3504 Chevrolet Code - Control Module Input Power 'B' Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC U3504 Chevrolet?

Faulty Control Module setting the code
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC U3504 Chevrolet?

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 U3504 Chevrolet 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 U3504 Chevrolet code?

Need more information on how to fix the U3504 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U3504 Chevrolet code diagnosed by a professional: Find a repair shop in your area

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 U3504 Chevrolet Code

1. What are the common symptoms of OBDII code U3504 in a Chevrolet?

Common symptoms include engine stalling, rough idling, poor acceleration, and illuminated check engine light.

2. What could cause the U3504 code to appear in a Chevrolet?

Possible causes include a faulty control module, wiring issues, a bad electrical connection, or a failing power supply.

3. How can I diagnose the Control Module Input Power 'B' Circuit Range/Performance issue in my Chevrolet?

Using a diagnostic scanner to retrieve the specific trouble code, checking the power supply to the control module, and inspecting the wiring for any damage are recommended diagnostic steps.

4. Is it safe to drive my Chevrolet with the U3504 trouble code present?

It is not recommended to drive the vehicle with the U3504 code as it can lead to potential engine performance issues and further damage if left unresolved.

5. Can I repair the U3504 code in my Chevrolet myself?

Depending on your automotive repair skills, you may be able to address the issue yourself by checking and repairing any damaged wiring, ensuring a proper power supply, or replacing a faulty control module.

6. How much does it typically cost to fix the U3504 code in a Chevrolet?

The cost of repairing the U3504 code can vary depending on the exact cause of the issue, but it may range from $100 to $500 including parts and labor.

7. Will resetting the trouble code make it go away permanently?

Resetting the trouble code without addressing the underlying issue will not make it go away permanently. The issue must be diagnosed and repaired to prevent the code from reappearing.

8. Can a weak car battery cause the U3504 trouble code in a Chevrolet?

Yes, a weak or failing car battery can potentially cause voltage fluctuations that may trigger the U3504 code.

9. Are there any preventive measures to avoid the U3504 code in a Chevrolet?

Regular maintenance, such as checking the battery's health and ensuring proper electrical connections, can help prevent issues that may lead to the U3504 trouble code.

10. How long does it take to repair the U3504 code in a Chevrolet?

The repair time for the U3504 code can vary depending on the exact cause and complexity of the issue. It may take anywhere from 1 to 3 hours for a professional mechanic to diagnose and fix the problem.