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C0890 2014 GMC Sierra Code - Control Module Voltage Reference Output 3 Circuit

Quick Answer

The C0890 diagnostic trouble code (DTC) for the 2014 GMC Sierra relates to the Control Module Voltage Reference Output 3 Circuit. Common causes include Wiring Issues: Damage, corrosion, or poor connections in the wiring harness can disrupt the voltage reference output, Faulty Connector: A faulty connector between the control module and the wiring harness can cause intermittent or complete loss of voltage reference, Control Module Failure: A malfunctioning control module may not be able to generate the correct voltage reference output. 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
C0890 2014 GMC Sierra indicates Control Module Voltage Reference Output 3 Circuit.
Common causes
Common causes include Wiring Issues: Damage, corrosion, or poor connections in the wiring harness can disrupt the voltage reference output, Faulty Connector: A faulty connector between the control module and the wiring harness can cause intermittent or complete loss of voltage reference, Control Module Failure: A malfunctioning control module may not be able to generate the correct voltage reference output.
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 09, 2024
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Code C0890 2014 GMC Sierra Description

The C0890 diagnostic trouble code (DTC) for the 2014 GMC Sierra relates to the Control Module Voltage Reference Output 3 Circuit. This code indicates that there is an issue with the voltage reference output from a specific control module in the vehicle. In modern vehicles, control modules play a crucial role in monitoring and controlling various systems, such as the engine, transmission, ABS, airbags, and more. The voltage reference output is a signal that provides a stable voltage level for these modules to operate correctly.

OBDII Code C0890 2014 GMC Sierra - Control Module Voltage Reference Output 3 Circuit
C0890 2014 GMC Sierra Code - Control Module Voltage Reference Output 3 Circuit

Common Causes of C0890 2014 GMC Sierra

  1. Wiring Issues: Damage, corrosion, or poor connections in the wiring harness can disrupt the voltage reference output.
  2. Faulty Connector: A faulty connector between the control module and the wiring harness can cause intermittent or complete loss of voltage reference.
  3. Control Module Failure: A malfunctioning control module may not be able to generate the correct voltage reference output.
  4. Short Circuit: A short circuit in the circuitry related to the voltage reference output can trigger the C0890 code.
  5. Environmental Factors: Exposure to moisture, heat, or other environmental factors can degrade the wiring or components involved in the voltage reference output.

Symptoms of C0890 2014 GMC Sierra

  1. Check Engine Light: The most common symptom associated with the C0890 code is the illumination of the check engine light on the dashboard.
  2. Erratic Behavior: The vehicle may exhibit erratic behavior, such as rough idling, stalling, or hesitation during acceleration.
  3. Electrical Issues: Other electrical systems in the vehicle may malfunction or behave unpredictably, such as power windows, door locks, or dashboard lights.
  4. Reduced Performance: The vehicle may experience reduced performance, decreased fuel efficiency, or difficulty starting.
  5. Inoperative Systems: Certain vehicle systems controlled by the affected module may become inoperative, such as ABS, traction control, or airbags.

How to Fix C0890 2014 GMC Sierra

  1. Diagnostic Scan: Use a diagnostic scan tool to retrieve the trouble codes and perform a comprehensive diagnosis of the Control Module Voltage Reference Output 3 Circuit.
  2. Visual Inspection: Inspect the wiring harness, connectors, and control module for any visible signs of damage, corrosion, or loose connections.
  3. Test Voltage Output: Measure the voltage output from the control module to verify if it is within the specified range. Replace the control module if necessary.
  4. Repair or Replace Wiring: Repair any damaged wiring, replace corroded connectors, and ensure all connections are secure to restore proper voltage reference output.
  5. Clear Codes: After completing the repair process, clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix C0890 2014 GMC Sierra

The typical repair costs for addressing the Control Module Voltage Reference Output 3 Circuit issue can vary depending on the specific cause of the problem and the extent of the damage. In general, the cost of parts for this repair can range from $100 to $500, while labor charges may add another $100 to $300. Overall, the total repair cost could fall within the $200 to $800 range, but it's important to note that actual expenses may differ based on factors such as the location of the repair shop, the make and model of the vehicle, and the hourly labor rates charged. It's recommended to consult with a qualified mechanic or auto repair shop to obtain an accurate cost estimate tailored to your situation.

What does this mean?

Tech Notes for C0890 2014 GMC Sierra

C0890:03 Control Module Voltage Reference Output 3 Circuit Low Voltage

C0890:07 Control Module Voltage Reference Output 3 Circuit High Voltage

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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 C0890 2014 GMC Sierra Code

1. What are the common symptoms of OBDII code C0890 in a 2014 GMC Sierra?

The common symptoms include illumination of the Check Engine Light, rough engine performance, and potential issues with the vehicle's fuel efficiency.

2. What does the OBDII code C0890 for a 2014 GMC Sierra indicate?

Code C0890 indicates a problem with the Control Module Voltage Reference Output 3 Circuit in the vehicle's electronic control module system.

3. What are the possible causes of OBDII code C0890 in a 2014 GMC Sierra?

Possible causes of code C0890 include a faulty control module, damaged wiring or connectors, a defective voltage regulator, or issues with the control module power supply.

4. How can I diagnose the Control Module Voltage Reference Output 3 Circuit issue in my 2014 GMC Sierra?

Diagnosing code C0890 may involve using a scan tool to retrieve the specific fault code, inspecting the wiring and connectors for damage, and testing the voltage regulator and control module for proper functioning.

5. Can I continue driving my 2014 GMC Sierra with OBDII code C0890?

It is not recommended to continue driving the vehicle with an unresolved C0890 code, as it can potentially lead to further damage to the control module or other components.

6. How can I repair OBDII code C0890 in my 2014 GMC Sierra?

Repairing code C0890 may involve replacing the faulty control module, repairing or replacing damaged wiring or connectors, or addressing any issues with the voltage regulator or power supply.

7. Is it possible to reset the OBDII code C0890 in a 2014 GMC Sierra without fixing the underlying issue?

While you can clear the fault code using an OBDII scanner, it is crucial to address the root cause of code C0890 to prevent it from reoccurring.

8. Are there any DIY tips for troubleshooting OBDII code C0890 in a 2014 GMC Sierra?

DIY tips for troubleshooting code C0890 include checking for loose or damaged wiring, ensuring proper connections, and inspecting the control module and voltage regulator for visible signs of damage.

9. How much does it typically cost to repair OBDII code C0890 in a 2014 GMC Sierra?

The cost of repairing code C0890 can vary depending on the specific cause of the issue, the extent of the damage, and whether you choose to perform the repairs yourself or take the vehicle to a professional mechanic.

10. Can a 2014 GMC Sierra pass a smog check with an unresolved OBDII code C0890?

An unresolved OBDII code like C0890 can cause a vehicle to fail a smog check, as it indicates a problem with the vehicle's emission control system. It is recommended to address the issue before undergoing a smog check.

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