AutoCodes – GMC – C0900 2014 GMC Sierra

C0900 2014 GMC Sierra Code - Device Voltage Malfunction

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 Battery voltage, Faulty Control Module, Control Module harness is open or shorted. 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: C0900 2014 GMC Sierra indicates Device Voltage Malfunction.
Common causes: Common causes include Battery voltage, Faulty Control Module, Control Module harness is open or shorted.
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 249

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 Sep 23, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0900 2014 GMC Sierra Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Damage to components, and incorrect data can occur when the voltage is out of range. The vehicle has multiple Control Modules that will set this Diagnostic Trouble Code (DTC).

OBDII Code C0900 2014 GMC Sierra - Device Voltage Malfunction - AutoCodes.com — C0900 2014 GMC Sierra Code - Device Voltage Malfunction

What does this mean?

What are the Possible Causes of the DTC C0900 2014 GMC Sierra?

Battery voltage
Faulty Control Module
Control Module harness is open or shorted
Control Module circuit poor electrical connection

How to Fix the DTC C0900 2014 GMC Sierra?

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 does this mean?

Code Tech Notes

- C0900:00 Control Module Power Circuit Malfunction
- C0900:07 Control Module Power Circuit High Voltage

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0900 2014 GMC Sierra 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 C0900 2014 GMC Sierra code?

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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 C0900 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code C0900 in a 2014 GMC Sierra?

- Common symptoms include issues with the vehicle's electrical system, such as dimming lights, erratic gauge readings, or difficulty starting the vehicle.

2. What does the OBDII code C0900 for Device Voltage Malfunction indicate in a 2014 GMC Sierra?

- This code indicates a malfunction related to the voltage supply to a specific device in the vehicle.

3. What are the possible causes of OBDII code C0900 in a 2014 GMC Sierra?

- Possible causes include a faulty battery, alternator issues, poor electrical connections, or a malfunctioning device within the vehicle's system.

4. How can I diagnose the Device Voltage Malfunction code C0900 in my 2014 GMC Sierra?

- A thorough inspection of the battery, alternator, and electrical connections is recommended. Testing the voltage output of these components can help pinpoint the issue.

5. What are some repair tips for addressing OBDII code C0900 in a 2014 GMC Sierra?

- Start by checking and possibly replacing the battery if it is old or not holding a charge. Ensure all electrical connections are clean and secure. If the issue persists, have the alternator tested and replace if necessary.

6. Can I continue driving my 2014 GMC Sierra with OBDII code C0900 active?

- It is not recommended to ignore this code, as it can lead to further electrical issues or potential damage to the vehicle's components. It is best to address the underlying problem promptly.

7. How much does it typically cost to repair OBDII code C0900 in a 2014 GMC Sierra?

- The cost of repair can vary depending on the specific cause of the issue. Costs may range from a simple battery replacement to more extensive electrical system repairs involving the alternator or other components.

8. Will resetting the OBDII code C0900 in my 2014 GMC Sierra make the issue go away?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the Device Voltage Malfunction. It is important to diagnose and address the root cause of the issue.

9. Can extreme weather conditions contribute to triggering OBDII code C0900 in a 2014 GMC Sierra?

- Yes, extreme temperatures can impact the performance of the vehicle's electrical system, potentially leading to voltage-related issues and triggering the Device Voltage Malfunction code.

10. Is it necessary to take my 2014 GMC Sierra to a mechanic for OBDII code C0900 diagnosis and repair?

- While some basic checks like inspecting the battery and connections can be done at home, diagnosing and repairing the specific cause of the code may require professional expertise and specialized equipment.