AutoCodesChevrolet – P2049 2016 Chevrolet Silverado

P2049 2016 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 2016 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 230
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 2016 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 2016 Chevrolet Silverado - Reductant Injector Control Circuit High Voltage - AutoCodes.com
P2049 2016 Chevrolet Silverado Code - Reductant Injector Control Circuit High Voltage

What are the Possible Causes of the DTC P2049 2016 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 2016 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 2016 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 2016 Chevrolet Silverado code?

Need more information on how to fix the P2049 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the 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 P2049 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P2049 on a 2016 Chevrolet Silverado?

- Common symptoms include the check engine light coming on, 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 for a 2016 Chevrolet Silverado?

- This code indicates that there is a high voltage condition in the circuit controlling the reductant injector, which can affect the emission control system.

3. What are the possible causes of OBDII code P2049 on a 2016 Chevrolet Silverado?

- Possible causes include a faulty reductant injector, wiring issues in the control circuit, a damaged connector, or a malfunctioning powertrain control module (PCM).

4. How can I diagnose OBDII code P2049 on my 2016 Chevrolet Silverado?

- Diagnosing this code typically involves inspecting the wiring and connectors related to the reductant injector, testing the injector itself, and checking for any PCM issues using a diagnostic tool.

5. Can I still drive my 2016 Chevrolet Silverado with OBDII code P2049?

- It is not recommended to drive the vehicle with this code present, as it can lead to reduced engine performance and potential emissions system problems.

6. How can I repair OBDII code P2049 on my 2016 Chevrolet Silverado?

- Repair options may include replacing the reductant injector, repairing any damaged wiring or connectors, and resetting the fault codes with a diagnostic tool after addressing the issue.

7. Is it possible to clear OBDII code P2049 on a 2016 Chevrolet Silverado without fixing the underlying issue?

- Clearing the code without fixing the underlying issue is not recommended, as the problem will likely persist and could lead to further issues down the road.

8. Can a DIY enthusiast fix OBDII code P2049 on a 2016 Chevrolet Silverado?

- Depending on the individual's skill level and experience with automotive repairs, some DIY enthusiasts may be able to address this code by following diagnostic procedures and making necessary repairs.

9. Will OBDII code P2049 on a 2016 Chevrolet Silverado cause the vehicle to fail an emissions test?

- Yes, this code can affect the vehicle's emissions system, potentially causing it to fail an emissions test until the issue is resolved.

10. How can I prevent OBDII code P2049 from recurring on my 2016 Chevrolet Silverado?

- Regular maintenance, checking for any signs of wiring or connector damage, and addressing any issues promptly can help prevent the recurrence of this code.

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