P2049 2017 GMC Sierra 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 GMC Sierra 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.
Code P2049 2017 GMC Sierra Description
What are the Possible Causes of the DTC P2049 2017 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 P2049 2017 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2049 2017 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.
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Frequently Asked Questions about P2049 2017 GMC Sierra Code
1. What does the OBDII code P2049 mean on a 2017 GMC Sierra?
P2049 indicates a "Reductant Injector Control Circuit High Voltage," meaning the powertrain control module (PCM) has detected an issue with the reductant injector circuit, such as excessive voltage.
2. What are the common symptoms of code P2049 on a 2017 GMC Sierra?
Common symptoms include the check engine light turning on, poor fuel efficiency, reduced engine power, and potential issues with the diesel exhaust fluid (DEF) system.
3. What causes the P2049 code to appear on a 2017 GMC Sierra?
Possible causes include a faulty reductant injector, damaged wiring or connectors in the reductant injector circuit, a failed PCM, or issues with the DEF system.
4. How do you diagnose the P2049 code on a 2017 GMC Sierra?
Diagnosis involves scanning for codes, visually inspecting the reductant injector circuit wiring and connectors for damage, testing the injector for proper function, and checking the PCM for faults.
5. Can I drive my 2017 GMC Sierra with the P2049 code?
Driving with this code is not recommended as it may lead to reduced engine performance and further damage to the exhaust or emissions system.
6. How do you fix the P2049 code on a 2017 GMC Sierra?
Repairs may include replacing the reductant injector, repairing or replacing damaged wiring or connectors, or reprogramming or replacing the PCM if necessary.
7. How much does it cost to fix the P2049 code on a 2017 GMC Sierra?
The cost varies depending on the specific issue, but repairs typically range from $150 to $600, including parts and labor for wiring repairs or injector replacement.
8. Can a bad DEF system cause the P2049 code?
Yes, a malfunctioning DEF system, including issues with the reductant injector, can trigger this code.
9. Will clearing the P2049 code fix the issue?
Clearing the code will remove it temporarily but won’t address the underlying problem causing the high voltage in the reductant injector circuit.
10. Is the P2049 code covered under warranty for a 2017 GMC Sierra?
It may be covered under the emissions system warranty, but you should check with your GMC dealer for specific coverage details.
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