AutoCodes – GMC – C0890 2016 GMC Sierra

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

Quick Answer

The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor 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: C0890 2016 GMC Sierra indicates Control Module Voltage Reference Output 3 Circuit.
Common causes: Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake Pedal Position Sensor 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 172

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 Jul 05, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0890 2016 GMC Sierra Description

The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. The brake pedal position sensor provides an analog voltage signal that will increase as the brake pedal is applied. The Body Control Module (BCM) provides a low reference signal and a 5 V reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM will apply battery voltage to the left and right stop lamp control circuits as well as the center high-mounted stop lamp relay control circuit illuminating the left and right stop lamps and the center high mounted stop lamp. The Diagnostic Trouble Code (DTC) will be set when the BCM detects an improper voltage in the brake pedal position sensor 5 V reference circuit.

OBDII Code C0890 2016 GMC Sierra - Control Module Voltage Reference Output 3 Circuit - AutoCodes.com — C0890 2016 GMC Sierra Code - Control Module Voltage Reference Output 3 Circuit

What does this mean?

What are the Possible Causes of the DTC C0890 2016 GMC Sierra?

Faulty Brake Pedal Position Sensor
Brake Pedal Position Sensor harness is open or shorted
Brake Pedal Position Sensor circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC C0890 2016 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

C0890:03 Control Module Voltage Reference Output 3 Circuit Low Voltage
C0890:07 Control Module Voltage Reference Output 3 Circuit High Voltage

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0890 2016 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 C0890 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 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.