AutoCodes – Chevrolet – U3501 Chevrolet

U3501 Chevrolet Code - Control Module Supply Circuit 1 Low Voltage

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: U3501 Chevrolet indicates Control Module Supply Circuit 1 Low Voltage.
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 2,269

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 Jun 18, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U3501 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 U3501 Chevrolet - Control Module Supply Circuit 1 Low Voltage - AutoCodes.com — U3501 Chevrolet Code - Control Module Supply Circuit 1 Low Voltage

What does this mean?

What are the Possible Causes of the DTC U3501 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 U3501 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 U3501 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 U3501 Chevrolet code?

Need more information on how to fix the U3501 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U3501 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 U3501 Chevrolet Code

1. What are the common symptoms of OBDII code U3501 in a Chevrolet related to Control Module Supply Circuit 1 Low Voltage?

- Common symptoms include poor engine performance, rough idling, stalling, and issues with starting the vehicle.

2. What are the possible causes of OBDII code U3501 in a Chevrolet indicating Control Module Supply Circuit 1 Low Voltage?

- Potential causes may include a faulty control module, damaged wiring or connectors, a weak battery, or issues with the alternator.

3. How can I diagnose the Control Module Supply Circuit 1 Low Voltage issue indicated by OBDII code U3501 in my Chevrolet?

- Diagnosis typically involves checking the voltage levels at the control module, inspecting the wiring and connectors for damage, and testing the battery and alternator.

4. Can a weak battery cause OBDII code U3501 to appear in a Chevrolet for Control Module Supply Circuit 1 Low Voltage?

- Yes, a weak or failing battery can lead to low voltage issues in the control module, triggering the U3501 code.

5. What repair tips can help resolve OBDII code U3501 related to Control Module Supply Circuit 1 Low Voltage in a Chevrolet?

- Repair tips may include checking and replacing damaged wiring, ensuring proper connection of connectors, testing and replacing the battery if necessary, and inspecting the alternator.

6. Is it safe to continue driving my Chevrolet with OBDII code U3501 indicating Control Module Supply Circuit 1 Low Voltage?

- It is not recommended to drive the vehicle with this code present, as it may lead to further electrical issues and potential damage to the control module.

7. Can a DIY enthusiast fix OBDII code U3501 in a Chevrolet for Control Module Supply Circuit 1 Low Voltage?

- Depending on the skill level and experience, some DIY enthusiasts may be able to address this issue by following proper diagnostic procedures and repair guidelines.

8. How much does it typically cost to repair OBDII code U3501 related to Control Module Supply Circuit 1 Low Voltage in a Chevrolet?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred dollars for basic repairs to more expensive if replacing major components is needed.

9. Will resetting the OBDII system clear the U3501 code for Control Module Supply Circuit 1 Low Voltage in a Chevrolet?

- Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear after the vehicle is driven and the problem resurfaces.