AutoCodesChevrolet – P2049 2017 Chevrolet Silverado

P2049 2017 Chevrolet Silverado Code - Reductant Injector Control Circuit High Voltage

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
P2049 2017 Chevrolet Silverado indicates Reductant Injector Control Circuit High Voltage.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 246
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 P2049 2017 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 a short to voltage in the low control circuit.
OBDII Code P2049 2017 Chevrolet Silverado - Reductant Injector Control Circuit High Voltage - AutoCodes.com
P2049 2017 Chevrolet Silverado Code - Reductant Injector Control Circuit High Voltage

What are the Possible Causes of the DTC P2049 2017 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 P2049 2017 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2049 2017 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 P2049 2017 Chevrolet Silverado code?

Need more information on how to fix the P2049 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2049 2017 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 P2049 2017 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2049 in a 2017 Chevrolet Silverado?

Common symptoms include the illumination of the Check Engine Light, reduced engine performance, and potential issues with the vehicle's emissions system.

2. What does the OBDII code P2049 "Reductant Injector Control Circuit High Voltage" mean in a 2017 Chevrolet Silverado?

This code indicates that the reductant injector control circuit is detecting a higher voltage than normal, which can lead to problems with the vehicle's emissions control system.

3. What are the possible causes of OBDII code P2049 in a 2017 Chevrolet Silverado?

Possible causes include a faulty reductant injector, issues with the reductant injector wiring or connectors, a defective powertrain control module (PCM), or a malfunction in the electrical system.

4. How can I diagnose OBDII code P2049 in my 2017 Chevrolet Silverado?

Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the reductant injector and its connections for any visible damage, and performing electrical tests to check for proper voltage levels.

5. Can I continue to drive my 2017 Chevrolet Silverado with OBDII code P2049?

While the vehicle may still be operable, it is recommended to address the issue promptly to prevent potential damage to the emissions system and ensure optimal engine performance.

6. How can I repair OBDII code P2049 in my 2017 Chevrolet Silverado?

Repair options may include replacing the faulty reductant injector, repairing any damaged wiring or connectors, resetting the PCM, or seeking assistance from a professional mechanic for further diagnostics.

7. Will resetting the Check Engine Light resolve OBDII code P2049 in a 2017 Chevrolet Silverado?

Simply resetting the Check Engine Light may temporarily remove the warning, but the underlying issue causing the code will persist unless it is properly diagnosed and repaired.

8. Is OBDII code P2049 a common issue in 2017 Chevrolet Silverado vehicles?

While not extremely common, this code can still occur due to various factors such as component wear, electrical issues, or other malfunctions within the emissions system.

9. Can extreme weather conditions affect the occurrence of OBDII code P2049 in a 2017 Chevrolet Silverado?

Extreme temperatures or environmental factors may impact the performance of the reductant injector and its control circuit, potentially leading to the triggering of this diagnostic trouble code.

10. How can I prevent OBDII code P2049 from reoccurring in my 2017 Chevrolet Silverado?

Regular maintenance, timely repairs of any related issues, and following manufacturer-recommended servicing intervals can help prevent the recurrence of this code and ensure the proper functioning of the vehicle's emissions control system.

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