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Engine-Codes – GMC – C0899 2016 GMC Sierra

C0899 2016 GMC Sierra Code - Device Voltage Malfunction

Quick Answer

The C0899 diagnostic trouble code for a 2016 GMC Sierra indicates a Device Voltage Malfunction. Common causes include Faulty wiring or loose connections in the electrical system, A malfunctioning voltage regulator, A failing alternator that is not charging the battery properly. 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
C0899 2016 GMC Sierra indicates Device Voltage Malfunction.
Common causes
Common causes include Faulty wiring or loose connections in the electrical system, A malfunctioning voltage regulator, A failing alternator that is not charging the battery properly.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code C0899 2016 GMC Sierra Description

The C0899 diagnostic trouble code for a 2016 GMC Sierra indicates a Device Voltage Malfunction. This code is typically triggered when the vehicle's onboard computer detects that the voltage levels from a specific device or system are outside the expected range. This can lead to various issues with the vehicle's performance and overall functionality.

OBDII Code C0899 2016 GMC Sierra - Device Voltage Malfunction
C0899 2016 GMC Sierra Code - Device Voltage Malfunction

Common Causes of C0899 2016 GMC Sierra

  1. Faulty wiring or loose connections in the electrical system.
  2. A malfunctioning voltage regulator.
  3. A failing alternator that is not charging the battery properly.
  4. A weak or failing battery that cannot maintain the required voltage levels.
  5. Corrosion or damage to electrical components, such as connectors or terminals.

Symptoms of C0899 2016 GMC Sierra

  1. Dashboard warning lights, such as the battery light or check engine light, may illuminate.
  2. Erratic engine performance, including stalling or rough idling.
  3. Issues with the vehicle's electrical components, such as power windows or door locks not working properly.
  4. Problems with the transmission, such as harsh shifting or difficulty changing gears.

How to Fix C0899 2016 GMC Sierra

  1. Begin by conducting a thorough inspection of the vehicle's electrical system, checking for any loose connections, damaged wiring, or corroded components.
  2. Test the alternator and voltage regulator to ensure they are functioning correctly and charging the battery at the proper levels.
  3. Check the battery's condition and replace it if necessary to ensure it can maintain the required voltage levels.
  4. Reset the trouble codes and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, consult a professional mechanic for further diagnostics and repairs.

Cost to Fix C0899 2016 GMC Sierra

The typical repair costs for a Device Voltage Malfunction can vary depending on the specific cause of the issue. In general, replacing a faulty alternator or voltage regulator can cost between $300 and $800, including parts and labor. If the battery needs to be replaced, the cost can range from $100 to $200. Additional diagnostic fees and labor costs may apply, with total repair costs potentially exceeding $1000 in some cases. It's important to consider the specific diagnosis time and labor rates at auto repair shops, which can vary based on location, vehicle make and model, and engine type. It's advisable to contact local shops for accurate estimates before proceeding with repairs.

What does this mean?

Tech Notes for C0899 2016 GMC Sierra

- C0899 00: Control Module Power Circuit Malfunction

- C0899 03: Control Module Power Circuit Low Voltage

Need more information about the C0899 2016 GMC Sierra 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 C0899 2016 GMC Sierra Code

1. What does OBDII code C0899 for a 2016 GMC Sierra indicate?

The code C0899 indicates a Device Voltage Malfunction in the vehicle's system.

2. What are the common symptoms of OBDII code C0899 in a 2016 GMC Sierra?

Common symptoms include issues with the vehicle's electrical system, dashboard warning lights, and potential problems with various electronic components.

3. What are the possible causes of the Device Voltage Malfunction code C0899 in a 2016 GMC Sierra?

Possible causes may include faulty wiring, a failing control module, a drained or weak battery, or issues with the charging system.

4. How can I diagnose the Device Voltage Malfunction code C0899 in my 2016 GMC Sierra?

Diagnosing the issue may involve checking the battery voltage, inspecting wiring for damage, testing the control modules, and using a diagnostic scanner to read live data and pinpoint the problem.

5. Can I still drive my 2016 GMC Sierra with OBDII code C0899?

It is not recommended to drive the vehicle with unresolved OBDII code C0899 as it may lead to potential electrical failures or other issues while on the road.

6. How can I repair OBDII code C0899 in my 2016 GMC Sierra?

Repair steps may include fixing wiring issues, replacing faulty control modules, ensuring a healthy battery and charging system, and clearing the trouble codes with a diagnostic tool.

7. Is it safe to reset the OBDII code C0899 in my 2016 GMC Sierra using a diagnostic scanner?

Resetting the code may temporarily clear the warning lights, but it is crucial to address the underlying issue causing the Device Voltage Malfunction to prevent further problems.

8. How much does it cost to repair OBDII code C0899 in a 2016 GMC Sierra?

The cost of repair can vary depending on the specific cause of the issue, parts needed, and labor rates at the repair shop. It's advisable to get a diagnosis first to determine the exact cost.

9. Can a DIY enthusiast fix OBDII code C0899 in a 2016 GMC Sierra?

While some basic troubleshooting steps can be performed by DIYers, diagnosing and repairing complex electrical issues like C0899 may require professional expertise and specialized tools.

10. Will OBDII code C0899 cause my 2016 GMC Sierra to fail an emissions test?

Yes, since OBDII codes like C0899 indicate potential issues with the vehicle's emissions-related systems, it is likely to cause a failed emissions test until the problem is resolved.

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