AutoCodes – Buick – U3508 Buick

U3508 Buick Code - Control Module Input Power 'C' 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: U3508 Buick indicates Control Module Input Power 'C' 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 945

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 U3508 Buick 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 U3508 Buick - Control Module Input Power 'C' Circuit Range/Performance - AutoCodes.com — U3508 Buick Code - Control Module Input Power 'C' Circuit Range/Performance

What does this mean?

What are the Possible Causes of the DTC U3508 Buick?

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

How to Fix the DTC U3508 Buick?

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 U3508 Buick 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 U3508 Buick code?

Need more information on how to fix the U3508 Buick code? Get Access to Factory Service Manuals

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 U3508 Buick Code

1. What are the common symptoms of OBDII code U3508 in a Buick related to the Control Module Input Power 'C' Circuit Range/Performance?

- Common symptoms include engine stalling, rough idling, poor acceleration, and in some cases, the vehicle may not start.

2. What are the possible causes of OBDII code U3508 in a Buick related to the Control Module Input Power 'C' Circuit Range/Performance?

- Possible causes can include a faulty control module, wiring issues, poor electrical connections, or a failing power supply to the control module.

3. How can I diagnose the OBDII code U3508 in my Buick related to the Control Module Input Power 'C' Circuit Range/Performance?

- Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, inspecting the control module and related wiring for any visible damage, and conducting voltage tests to determine if the power supply is within specifications.

4. Is it safe to continue driving my Buick with the OBDII code U3508 related to the Control Module Input Power 'C' Circuit Range/Performance?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to more severe issues and potential engine damage. It is best to address the problem promptly.

5. Can I repair the OBDII code U3508 in my Buick related to the Control Module Input Power 'C' Circuit Range/Performance myself?

- While some DIY enthusiasts may attempt to diagnose and repair this issue, it is recommended to seek professional help, especially when dealing with control modules and electrical components to ensure a proper and safe repair.

6. Are there any common fixes for the OBDII code U3508 in a Buick related to the Control Module Input Power 'C' Circuit Range/Performance?

- Common fixes may include repairing or replacing damaged wiring, ensuring proper electrical connections, replacing a faulty control module, or addressing any power supply issues.

7. How much does it typically cost to repair the OBDII code U3508 in a Buick related to the Control Module Input Power 'C' Circuit Range/Performance?

- Repair costs can vary depending on the exact cause of the issue, but it is advisable to budget for diagnostic fees, parts replacement costs, and labor charges, which can range from a few hundred to over a thousand dollars.

8. Will resetting the OBDII code U3508 in my Buick related to the Control Module Input Power 'C' Circuit Range/Performance make it go away permanently?

- Resetting the code may temporarily turn off the check engine light, but if the underlying issue is not addressed, the code is likely to reappear once the vehicle is driven and the problem persists.