AutoCodesGMC – P2047 2018 GMC Sierra

P2047 2018 GMC Sierra Code - Reductant Injector Control Circuit

Quick Answer

The Reductant Injector is a component of selective catalytic reduction system used to dose the reductant fluid to the exhaust gas and participate in the reduction reactions. Common causes include Faulty Reductant Injector, Reductant Injector harness is open or shorted, Reductant Injector 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
P2047 2018 GMC Sierra indicates Reductant Injector Control Circuit.
Common causes
Common causes include Faulty Reductant Injector, Reductant Injector harness is open or shorted, Reductant Injector 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 210
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 01, 2022
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Code P2047 2018 GMC Sierra Description

The Reductant Injector is a component of selective catalytic reduction system used to dose the reductant fluid to the exhaust gas and participate in the reduction reactions. The Engine Control Module (ECM) calculates the injection time of the reductant injector based on the measurement of the NOx sensors. To activate the injector the ECM supplies a PWM signal to the high control circuit and the low control circuit is always commanded ON. The Diagnostic Trouble Code (DTC) will be set when the Reductant Control Module detects an open in the control circuit.
OBDII Code P2047 2018 GMC Sierra - Reductant Injector Control Circuit - AutoCodes.com
P2047 2018 GMC Sierra Code - Reductant Injector Control Circuit

What are the Possible Causes of the DTC P2047 2018 GMC Sierra?

  • Faulty Reductant Injector
  • Reductant Injector harness is open or shorted
  • Reductant Injector circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P2047 2018 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2047 2018 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 P2047 2018 GMC Sierra code?

Need more information on how to fix the P2047 2018 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2047 2018 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

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 P2047 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P2047 in a 2018 GMC Sierra?

The common symptoms of code P2047 include the Check Engine Light illuminating on the dashboard, reduced engine performance, and potential difficulty starting the vehicle.

2. What does the OBDII code P2047 on a 2018 GMC Sierra indicate?

Code P2047 on a 2018 GMC Sierra specifically relates to a fault in the Reductant Injector Control Circuit.

3. What are the possible causes of OBDII code P2047 in a 2018 GMC Sierra?

Possible causes of code P2047 include a faulty reductant injector, wiring issues in the control circuit, a corroded connector, or a problem with the powertrain control module.

4. How can I diagnose OBDII code P2047 in my 2018 GMC Sierra?

To diagnose code P2047, a technician may use a scan tool to read the code, inspect the reductant injector and its wiring, check for corrosion in the connectors, and perform a thorough visual inspection of the system.

5. Can I continue driving my 2018 GMC Sierra with OBDII code P2047?

It is not recommended to continue driving your GMC Sierra with code P2047 as it can lead to reduced engine performance and potential damage to the vehicle's emissions system.

6. How can I repair OBDII code P2047 in my 2018 GMC Sierra?

Repairing code P2047 may involve replacing the faulty reductant injector, repairing any damaged wiring or connectors, or resetting the powertrain control module.

7. Is OBDII code P2047 in a 2018 GMC Sierra easy to fix?

The complexity of fixing code P2047 in a 2018 GMC Sierra depends on the underlying cause. Some cases may require simple repairs, while others may need more extensive troubleshooting by a professional technician.

8. Can a DIY enthusiast fix OBDII code P2047 in a 2018 GMC Sierra?

While some DIY enthusiasts may have the skills to address simple causes of code P2047, it is recommended to consult a professional technician for accurate diagnosis and repair to avoid further issues.

9. Will resetting the Check Engine Light resolve OBDII code P2047 in my 2018 GMC Sierra?

Simply resetting the Check Engine Light will not fix the underlying issue causing code P2047. It is crucial to diagnose the problem accurately and address it to prevent the code from reoccurring.

10. How much does it cost to repair OBDII code P2047 in a 2018 GMC Sierra?

The cost of repairing code P2047 in a 2018 GMC Sierra can vary depending on the cause of the issue, parts needed for repair, and labor costs. It is recommended to obtain quotes from reputable repair shops for an accurate estimate.

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