AutoCodes – Generic – U3013

U3013 Code - Control Module Input Power 3

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: U3013 indicates Control Module Input Power 3.
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 8,378

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 U3013 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 U3013 - Control Module Input Power 3 - AutoCodes.com — U3013 Code - Control Module Input Power 3

What does this mean?

What are the Possible Causes of the DTC U3013?

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

How to Fix the DTC U3013?

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 U3013 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 U3013 code?

Need more information on how to fix the U3013 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U3013 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U3013 Buick — Control Module Input Power 3
U3013 Cadillac — Control Module Input Power 3
U3013 Chevrolet — Control Module Input Power 3
U3013 GMC — Control Module Input Power 3

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 U3013 Code

1. What does the OBDII code U3013 mean?

U3013 indicates an issue with "Control Module Input Power 3," typically related to a power supply or voltage problem affecting a control module.

2. What are the common symptoms of the U3013 code?

Symptoms may include warning lights on the dashboard, intermittent electrical issues, failure of certain systems to operate, or difficulty starting the vehicle.

3. What causes the U3013 code to appear?

Possible causes include a faulty control module, loose or corroded electrical connections, damaged wiring, or a failing battery or alternator.

4. How is the U3013 code diagnosed?

Technicians will inspect the battery, alternator, fuses, and wiring for damage, corrosion, or loose connections. They may also use a multimeter to test voltage levels and continuity.

5. Can a weak battery cause the U3013 code?

Yes, a weak or failing battery can cause inadequate power delivery to the control module, triggering the U3013 code.

6. Is it safe to drive with the U3013 code?

Driving with the U3013 code may be unsafe if it affects critical systems like brakes, steering, or lights. It's best to address the issue promptly.

7. What repairs can fix the U3013 code?

Repairs may include replacing a weak battery, repairing damaged wiring, tightening loose connections, replacing a faulty control module, or fixing alternator issues.

8. How much does it cost to fix the U3013 code?

Repair costs vary based on the root cause but can range from $50 for minor fixes like cleaning terminals to over $1,000 if a control module needs replacement.

9. Can clearing the U3013 code with a scanner fix the problem?

Clearing the code may temporarily turn off the warning light, but the underlying issue must be resolved to prevent the code from returning.

10. What should I do if the U3013 code keeps coming back?

If the code persists, ensure all electrical components are thoroughly inspected, and consider consulting a professional technician to check for hidden issues like internal control module faults.