AutoCodes – Chevrolet – P2047 2018 Chevrolet Silverado

P2047 2018 Chevrolet Silverado 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 Chevrolet Silverado 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 213

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 Oct 01, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2047 2018 Chevrolet Silverado 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 Chevrolet Silverado - Reductant Injector Control Circuit - AutoCodes.com — P2047 2018 Chevrolet Silverado Code - Reductant Injector Control Circuit

What does this mean?

What are the Possible Causes of the DTC P2047 2018 Chevrolet Silverado?

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 Chevrolet Silverado?

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

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2047 2018 Chevrolet Silverado 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 Chevrolet Silverado code?

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

Need Help with the Code?

Get the P2047 2018 Chevrolet Silverado 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 Chevrolet Silverado Code

1. What does the OBDII code P2047 mean on a 2018 Chevrolet Silverado?

P2047 indicates an issue with the reductant injector control circuit, which is responsible for controlling the diesel exhaust fluid (DEF) injector in the emissions system.

2. What are common symptoms of code P2047 in a 2018 Chevrolet Silverado?

Symptoms may include a Check Engine Light, reduced engine performance, poor fuel efficiency, and possible DEF system warnings on the dashboard.

3. What causes the P2047 code to appear on a 2018 Silverado?

Common causes include a faulty reductant injector, damaged wiring or connectors in the control circuit, or a malfunctioning powertrain control module (PCM).

4. Can I continue driving my 2018 Silverado with a P2047 code?

Driving with this code is possible but not recommended, as it can lead to increased emissions, reduced performance, and potential damage to the DEF system.

5. How is the P2047 code diagnosed on a 2018 Chevrolet Silverado?

A mechanic will use an OBDII scanner to confirm the code, inspect the reductant injector and wiring for damage, and check for proper voltage and continuity in the control circuit.

6. What repairs are needed to fix code P2047 on a 2018 Silverado?

Repairs may include replacing the reductant injector, repairing damaged wiring or connectors, or reprogramming/replacing the PCM if necessary.

7. How much does it cost to fix a P2047 code on a 2018 Chevrolet Silverado?

Repair costs vary, but replacing the reductant injector typically ranges from $200 to $600, while wiring repairs or PCM replacement may cost more.

8. Can a faulty reductant injector trigger the P2047 code?

Yes, a faulty reductant injector is one of the most common reasons for the P2047 code to appear.

9. Will clearing the P2047 code with a scanner fix the problem?

Clearing the code may temporarily turn off the Check Engine Light, but the underlying issue must be repaired to prevent the code from returning.

10. Is the P2047 code covered under warranty for a 2018 Chevrolet Silverado?

If the vehicle is still under the emissions warranty, repairs related to the DEF system may be covered. Check with your dealer for specific warranty terms.