AutoCodes – Chevrolet – U350A Chevrolet

U350A Chevrolet Code - Control Module Supply Circuit High 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: U350A Chevrolet indicates Control Module Supply Circuit High 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 642

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 U350A 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 U350A Chevrolet - Control Module Supply Circuit High Voltage - AutoCodes.com — U350A Chevrolet Code - Control Module Supply Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC U350A 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 U350A 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 U350A 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 U350A Chevrolet code?

Need more information on how to fix the U350A Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U350A 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 U350A Chevrolet Code

1. What are the common symptoms of U350A Chevrolet OBDII code?

- Common symptoms include malfunction indicator light (MIL) illumination, reduced engine performance, and potential issues with other electronic systems.

2. What causes the U350A Chevrolet code to trigger?

- The U350A code is triggered when the control module detects a high voltage in the supply circuit, indicating a potential issue with power supply to the module.

3. How serious is the U350A Chevrolet code?

- While the severity of the code may vary, it is important to address it promptly to prevent potential damage to the control module and ensure proper functioning of the vehicle.

4. How can I diagnose the U350A Chevrolet code?

- Diagnosing the U350A code typically involves using a diagnostic scanner to retrieve the code, inspecting the control module supply circuit, checking for loose connections, and testing the voltage levels.

5. What are some possible repair tips for the U350A code?

- Repair tips may include checking and repairing any damaged wiring or connectors in the control module supply circuit, resetting the code, and retesting to ensure the issue is resolved.

6. Can I drive my vehicle with the U350A Chevrolet code?

- It is not recommended to drive the vehicle with the U350A code present, as it may lead to further electrical issues and potential engine performance problems.

7. How much does it cost to repair the U350A Chevrolet code?

- Repair costs for the U350A code can vary depending on the underlying issue, but it is advisable to consult a professional mechanic for an accurate diagnosis and repair estimate.

8. Can a DIY enthusiast fix the U350A Chevrolet code?

- While some DIY enthusiasts may be able to address simple wiring or connector issues related to the U350A code, it is recommended to seek professional help for a thorough diagnosis and repair.

9. Will resetting the code make it go away permanently?

- Resetting the U350A code may temporarily clear the MIL, but if the underlying issue is not addressed, the code is likely to reappear. It is important to diagnose and repair the root cause.

10. Is the U350A Chevrolet code specific to certain Chevrolet models?

- The U350A code is specific to certain Chevrolet models and may not be applicable to all vehicles. It is important to consult the vehicle's specific OBDII code list for accurate information.