AutoCodes – Cadillac – U3505 Cadillac

U3505 Cadillac Code - Control Module Supply Circuit 2 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: U3505 Cadillac indicates Control Module Supply Circuit 2 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 1,170

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 U3505 Cadillac 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 U3505 Cadillac - Control Module Supply Circuit 2 Low Voltage - AutoCodes.com — U3505 Cadillac Code - Control Module Supply Circuit 2 Low Voltage

What does this mean?

What are the Possible Causes of the DTC U3505 Cadillac?

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

How to Fix the DTC U3505 Cadillac?

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 U3505 Cadillac 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 U3505 Cadillac 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 U3505 Cadillac Code

1. What are the common symptoms of OBDII code U3505 in a Cadillac related to Control Module Supply Circuit 2 Low Voltage?

- Common symptoms include engine stalling, rough idling, poor acceleration, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code U3505 in a Cadillac indicating Control Module Supply Circuit 2 Low Voltage?

- Possible causes can include a faulty control module, damaged wiring or connectors, a drained or weak battery, or a malfunctioning power supply.

3. How can I diagnose the Control Module Supply Circuit 2 Low Voltage issue in my Cadillac?

- You can diagnose the issue by using a diagnostic scanner to retrieve the specific trouble code, inspecting all related wiring and connectors for damage, checking the battery voltage, and testing the control module for proper functionality.

4. Can a weak battery cause the U3505 code in a Cadillac?

- Yes, a weak or drained battery can lead to low voltage in the control module supply circuit, triggering the U3505 code in a Cadillac.

5. What are some repair tips for addressing the U3505 code in a Cadillac?

- Repair tips include checking and replacing damaged wiring or connectors, ensuring a strong and properly charged battery, testing and potentially replacing the control module, and clearing the trouble code after repairs are made.

6. Is it safe to continue driving my Cadillac with the U3505 trouble code related to Control Module Supply Circuit 2 Low Voltage?

- It is not recommended to drive your Cadillac with the U3505 code present, as it can lead to further damage to the vehicle and potentially cause unsafe driving conditions.

7. How much does it typically cost to repair the Control Module Supply Circuit 2 Low Voltage issue in a Cadillac?

- The cost of repairing the U3505 code in a Cadillac can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more for parts and labor.

8. Can I reset the U3505 trouble code in my Cadillac without repairing the underlying issue?

- While you can clear the trouble code using a diagnostic scanner, it is important to address the underlying problem causing the U3505 code to prevent further issues with your vehicle.

9. Will the U3505 code in a Cadillac reset itself after a certain number of driving cycles?

- The U3505 code may not reset itself after a certain number of driving cycles if the underlying issue causing the code is not resolved. It is recommended to diagnose and repair the problem to clear the trouble code.

10. How can I prevent the U3505 trouble code related to Control Module Supply Circuit 2 Low Voltage from appearing in my Cadillac in the future?

- To prevent the U3505 trouble code, ensure regular maintenance of your vehicle, keep the battery charged and in good condition, inspect wiring and connectors periodically, and address any electrical issues promptly.