AutoCodes – Audi – P2047 Audi

P2047 Audi Code - Reductant Injection Valve Circuit/Open Bank 1 Unit 1

Quick Answer

The Diesel Exhaust Fluid (DEF) system is commonly called a Selective Catalytic Reduction (SCR) system to reduce harmful Oxides of Nitrogen (NOx). Common causes include Faulty Reductant Injection, Reductant Injection harness is open or shorted, Reductant Injection 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 Audi indicates Reductant Injection Valve Circuit/Open Bank 1 Unit 1.
Common causes: Common causes include Faulty Reductant Injection, Reductant Injection harness is open or shorted, Reductant Injection 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.

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Code Popularity 1,322

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 30, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2047 Audi Description

The Diesel Exhaust Fluid (DEF) system is commonly called a Selective Catalytic Reduction (SCR) system to reduce harmful Oxides of Nitrogen (NOx). The diesel exhaust fluid is a Urea based solution of approximately 32% Urea and 64% distilled water. The solution is injected into the exhaust gas stream upstream of the SCR catalyst. Once in the exhaust system it decomposes and becomes Ammonia (NH3) and Carbon dioxide (CO2). Within the catalyst, the NH3 and CO2 react with the Nox to create Oxygen (O2) and harmless Nitrogen (N2).
The system requires a storage tank for the diesel exhaust fluid, a pump with an integrated level sensor, pressure sensor, and fluid quality sensor, an injector fitted to the exhaust system, a fluid heater, and the catalyst.
The system is closely monitored for correct operation as the failure of the system will have a significant impact on vehicle exhaust gas emissions of oxides of Nitrogen.

OBDII Code P2047 Audi - Reductant Injection Valve Circuit/Open Bank 1 Unit 1 - AutoCodes.com — P2047 Audi Code - Reductant Injection Valve Circuit/Open Bank 1 Unit 1

What does this mean?

What are the Possible Causes of the DTC P2047 Audi?

Faulty Reductant Injection
Reductant Injection harness is open or shorted
Reductant Injection circuit poor electrical connection

How to Fix the DTC P2047 Audi?

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 P2047 Audi 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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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 Audi Code

1. What are the common symptoms of OBDII code P2047 in an Audi?

- Common symptoms include the Check Engine Light being illuminated, reduced engine performance, and potential issues with the exhaust system.

2. What does the OBDII code P2047 Audi indicate?

- This code indicates a malfunction in the reductant injection valve circuit, specifically an open circuit in Bank 1 Unit 1 of the system.

3. What are the possible causes of OBDII code P2047 in an Audi?

- Potential causes include a faulty reductant injection valve, damaged wiring or connectors in the circuit, a blown fuse, or a problem with the reductant injection control module.

4. How serious is OBDII code P2047 in an Audi?

- While the code itself may not cause immediate drivability issues, it can lead to increased emissions and potential damage to the exhaust system if left unresolved.

5. Can I drive my Audi with OBDII code P2047?

- It is generally not recommended to drive for an extended period with this code present, as it can impact the vehicle's emissions and overall performance.

6. How can I diagnose OBDII code P2047 in my Audi?

- A proper diagnosis involves using an OBDII scanner to retrieve the code, followed by inspecting the reductant injection system components, wiring, and connectors for any visible damage.

7. How can I repair OBDII code P2047 in my Audi?

- Repairing this code may involve replacing the reductant injection valve, repairing any damaged wiring or connectors, checking and replacing fuses if necessary, or addressing issues with the control module.

8. Can I reset the OBDII code P2047 in my Audi without fixing the issue?

- While you can clear the code with an OBDII scanner, it is not recommended to do so without addressing the underlying problem, as the Check Engine Light is likely to reappear.

9. How much does it cost to repair OBDII code P2047 in an Audi?

- The cost of repair can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $200 to $500 or more.

10. Can a DIY enthusiast fix OBDII code P2047 in an Audi?

- While some experienced DIY enthusiasts may be able to address this code themselves, it is generally recommended to seek professional help due to the complexity of the reductant injection system.