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C0890 2016 GMC Sierra Code - Control Module Voltage Reference Output 3 Circuit

Quick Answer

The C0890 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Control Module Voltage Reference Output 3 Circuit. Common causes include Faulty voltage regulator within the control module, Wiring or connection issues in the voltage reference circuit, Corrosion or damage to the control module connectors. 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 2016 GMC Sierra indicates Control Module Voltage Reference Output 3 Circuit.
Common causes
Common causes include Faulty voltage regulator within the control module, Wiring or connection issues in the voltage reference circuit, Corrosion or damage to the control module connectors.
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 C0890 2016 GMC Sierra Description

The C0890 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Control Module Voltage Reference Output 3 Circuit. This code indicates that there is a malfunction in the circuit responsible for providing a stable voltage reference output to various control modules within the vehicle. The voltage reference output is crucial for ensuring that these modules receive the correct voltage levels to operate effectively.

OBDII Code C0890 2016 GMC Sierra - Control Module Voltage Reference Output 3 Circuit
C0890 2016 GMC Sierra Code - Control Module Voltage Reference Output 3 Circuit

Common Causes of C0890 2016 GMC Sierra

  1. Faulty voltage regulator within the control module
  2. Wiring or connection issues in the voltage reference circuit
  3. Corrosion or damage to the control module connectors
  4. Defective control module itself
  5. Electrical issues such as a short circuit or open circuit in the wiring harness

Symptoms of C0890 2016 GMC Sierra

  1. Engine misfires or hesitation during acceleration
  2. Illumination of the Check Engine Light
  3. Rough idling or stalling
  4. Issues with shifting gears in automatic transmissions
  5. Erratic behavior of other electronic systems in the vehicle

How to Fix C0890 2016 GMC Sierra

  1. Begin by conducting a thorough visual inspection of the control module connectors, wiring, and voltage reference circuit to check for any visible damage or corrosion.
  2. Use a multimeter to test the voltage output from the control module and compare it to the specified values in the vehicle's service manual.
  3. If the voltage output is outside the acceptable range, replace the faulty control module or voltage regulator as needed.
  4. Repair any damaged wiring or connectors in the circuit and ensure proper connections are made.
  5. Clear the DTC using a diagnostic scanner and perform a test drive to confirm that the issue has been resolved.

Cost to Fix C0890 2016 GMC Sierra

The typical repair costs for addressing a C0890 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, parts for replacing a control module or voltage regulator may range from $100 to $500, while labor costs can add an additional $100 to $300. Overall, the total repair cost could range from $200 to $800. It's important to note that these estimates are rough averages, and actual costs may differ based on factors such as location, vehicle make and model, and the rates charged by the auto repair shop. It's recommended to obtain quotes from local shops for a more accurate cost estimate.

What does this mean?

Tech Notes for C0890 2016 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 2016 GMC Sierra Code

1. What does the OBDII code C0890 mean on a 2016 GMC Sierra?

The code C0890 indicates an issue with the Control Module Voltage Reference Output 3 Circuit, which may signal a malfunction in one of the voltage reference circuits used by the control modules.

2. What are common symptoms of the C0890 code on a 2016 GMC Sierra?

Common symptoms include warning lights on the dashboard, such as the check engine light or stability control light, and possible performance issues like reduced engine power or improper operation of connected components.

3. What causes the C0890 code to appear on a 2016 GMC Sierra?

The C0890 code can be caused by a damaged or corroded wiring harness, a faulty control module, a short or open in the circuit, or a failing sensor connected to the voltage reference circuit.

4. Can a dead battery trigger the C0890 code on a GMC Sierra?

Yes, a weak or dead battery, or inconsistent voltage supply, can contribute to triggering the C0890 code due to insufficient power reaching the control module.

5. How do I diagnose the C0890 code on a 2016 GMC Sierra?

Start by using an OBDII scanner to confirm the code, then inspect the wiring and connectors for damage or corrosion. Check the voltage reference circuit for continuity and perform tests on related sensors and modules.

6. Is the C0890 code serious for a 2016 GMC Sierra?

While the vehicle may still be drivable, the C0890 code should not be ignored as it can affect essential systems and eventually lead to more severe performance or safety issues.

7. What repairs are typically needed to fix the C0890 code on a GMC Sierra?

Repairs may include fixing or replacing damaged wiring, cleaning corroded connectors, replacing a faulty control module, or addressing issues with sensors connected to the voltage reference circuit.

8. Can I clear the C0890 code without fixing the issue?

Clearing the code with an OBDII scanner may temporarily turn off the warning light, but the underlying problem must be fixed to prevent the code from returning.

9. How much does it cost to repair the C0890 code on a 2016 GMC Sierra?

Repair costs can vary depending on the root cause. Simple fixes like repairing wiring may cost under $100, while replacing a control module or sensor can cost several hundred dollars.

10. Can a C0890 code affect other systems on my GMC Sierra?

Yes, since the voltage reference circuit supplies power to multiple sensors and modules, a fault in this circuit can affect related systems, such as ABS, traction control, or engine performance.

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