P2047 2017 GMC Sierra Code - Reductant Injector Control Circuit
Quick Answer
The P2047 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the reductant injector control circuit. Common causes include Wiring harness issues: Damage or corrosion to the wiring harness connected to the reductant injector control circuit can cause the P2047 code to trigger, Connector problems: Loose or damaged connectors can disrupt the communication between the PCM and the reductant injector, leading to a fault, Faulty reductant injector: A malfunctioning reductant injector may not inject the correct amount of DEF, causing the PCM to detect a fault. 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 2017 GMC Sierra indicates Reductant Injector Control Circuit.
- Common causes
- Common causes include Wiring harness issues: Damage or corrosion to the wiring harness connected to the reductant injector control circuit can cause the P2047 code to trigger, Connector problems: Loose or damaged connectors can disrupt the communication between the PCM and the reductant injector, leading to a fault, Faulty reductant injector: A malfunctioning reductant injector may not inject the correct amount of DEF, causing the PCM to detect a fault.
- 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 P2047 2017 GMC Sierra Description
The P2047 diagnostic trouble code (DTC) for a 2017 GMC Sierra relates to the reductant injector control circuit. In vehicles equipped with selective catalytic reduction (SCR) systems, the reductant injector is responsible for injecting diesel exhaust fluid (DEF) into the exhaust stream to reduce harmful emissions. The reductant injector control circuit is a crucial component that controls the operation of the injector, ensuring the proper amount of DEF is injected at the right time.
Common Causes of P2047 2017 GMC Sierra
- Wiring harness issues: Damage or corrosion to the wiring harness connected to the reductant injector control circuit can cause the P2047 code to trigger.
- Connector problems: Loose or damaged connectors can disrupt the communication between the PCM and the reductant injector, leading to a fault.
- Faulty reductant injector: A malfunctioning reductant injector may not inject the correct amount of DEF, causing the PCM to detect a fault.
- PCM malfunction: If the PCM itself is faulty, it may not be able to properly control the reductant injector, resulting in the P2047 code.
Symptoms of P2047 2017 GMC Sierra
- Illuminated check engine light: The most common symptom associated with the P2047 code is the illumination of the check engine light on the vehicle's dashboard.
- Reduced engine performance: The vehicle may experience a decrease in engine performance, including reduced power and acceleration.
- Increased emissions: Due to the improper injection of DEF, the vehicle may produce higher emissions than normal.
- Poor fuel efficiency: A malfunctioning reductant injector control circuit can lead to decreased fuel efficiency as the engine may not be operating at optimal levels.
How to Fix P2047 2017 GMC Sierra
- Diagnose the issue: Use a scan tool to retrieve the DTC and perform a thorough inspection of the reductant injector control circuit, wiring harness, and connectors.
- Repair or replace wiring harness: If any damage or corrosion is found in the wiring harness, repair or replace the affected sections.
- Check and clean connectors: Ensure all connectors are securely attached and free of debris or corrosion. Clean or replace connectors as needed.
- Test reductant injector: Test the reductant injector to determine if it is functioning properly. Replace the injector if necessary.
- Clear DTC and test drive: After completing the repairs, clear the DTC from the PCM's memory and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P2047 2017 GMC Sierra
The cost of repairing a P2047 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue. In general, the cost of parts such as a new reductant injector or wiring harness sections can range from $200 to $500. Labor costs at an auto repair shop can add an additional $100 to $300 to the total repair bill. It's important to note that diagnosis time and labor rates can vary, so it's recommended to obtain a detailed estimate from a qualified mechanic before proceeding with the repairs.
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Frequently Asked Questions about P2047 2017 GMC Sierra Code
1. What does the OBDII code P2047 mean on a 2017 GMC Sierra?
P2047 indicates an issue with the reductant injector control circuit, which is part of the diesel exhaust fluid (DEF) system responsible for reducing emissions.
2. What are the common symptoms of code P2047 on a 2017 GMC Sierra?
Symptoms may include the check engine light turning on, reduced engine power, increased emissions, and poor DEF system performance.
3. What causes the P2047 code to appear on a 2017 GMC Sierra?
Common causes include a faulty reductant injector, damaged wiring or connectors in the control circuit, or a malfunctioning DEF control module.
4. Can I still drive my 2017 GMC Sierra with a P2047 code?
Driving with this code is not recommended for extended periods, as it may lead to increased emissions or reduced engine performance.
5. How do I diagnose the P2047 code on my GMC Sierra?
Start by visually inspecting the wiring and connectors for damage, use a multimeter to test the circuit, and scan the DEF system with a diagnostic tool.
6. How is the P2047 code repaired on a 2017 GMC Sierra?
Repairs may include replacing the reductant injector, repairing damaged wiring, or reprogramming or replacing the DEF control module.
7. What tools are needed to fix the P2047 code?
You’ll need a diagnostic scanner, a multimeter for electrical testing, and potentially tools for replacing the injector or repairing wiring.
8. Can a software update fix the P2047 code on a 2017 GMC Sierra?
In some cases, a reprogramming of the DEF control module may resolve the issue if the problem is software-related.
9. How much does it cost to repair the P2047 code on a GMC Sierra?
The repair cost can vary depending on the issue, but replacing a reductant injector typically costs between $200 and $600, excluding labor.
10. Is the P2047 code covered under warranty for a 2017 GMC Sierra?
It may be covered if your vehicle is still under the emissions warranty. Check with your dealership for details.
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