P2064 Audi Code - Reductant/Regeneration Supply Control Circuit High
Quick Answer
The code indicates that the Powertrain Control Module (PCM) has detected a malfunction in the reductant injector air pump control circuit. Common causes include Faulty Reductant Injector Air Pump, Reductant Injector Air Pump harness is open or shorted, Reductant Injector Air Pump 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
- P2064 Audi indicates Reductant/Regeneration Supply Control Circuit High.
- Common causes
- Common causes include Faulty Reductant Injector Air Pump, Reductant Injector Air Pump harness is open or shorted, Reductant Injector Air Pump 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 P2064 Audi Description
What are the Possible Causes of the DTC P2064 Audi?
- Faulty Reductant Injector Air Pump
- Reductant Injector Air Pump harness is open or shorted
- Reductant Injector Air Pump circuit poor electrical connection
- Faulty Powertrain Control Module (PCM)
How to Fix the DTC P2064 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 P2064 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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Frequently Asked Questions about P2064 Audi Code
1. What does OBDII code P2064 mean on an Audi?
P2064 indicates a "Reductant/Regeneration Supply Control Circuit High," meaning the vehicle's system has detected an electrical issue in the circuit controlling the diesel exhaust fluid (DEF) or reductant supply.
2. What are common symptoms of code P2064 in an Audi?
Typical symptoms include the check engine light turning on, reduced engine performance, poor fuel economy, and possible warnings related to the emissions or DEF system.
3. What causes the P2064 code to appear in an Audi?
Common causes include a faulty reductant pump, damaged wiring or connectors in the reductant supply circuit, a malfunctioning control module, or issues with the reductant heating element.
4. Can driving with a P2064 code damage my Audi?
Yes, ignoring this code can lead to more severe emissions system issues, potential engine derating, or failure to meet emissions regulations, especially in diesel vehicles.
5. How do I diagnose the P2064 code in my Audi?
Diagnosis involves inspecting the reductant pump, wiring, and connectors for damage, using a multimeter to check for proper voltage, and testing the reductant control module for functionality.
6. Can a blown fuse cause the P2064 code in an Audi?
Yes, a blown fuse in the reductant supply circuit can cause the P2064 code by interrupting the electrical flow to the system.
7. Is replacing the reductant pump always necessary to fix P2064?
No, replacement is only necessary if the pump is confirmed to be faulty. The issue could also stem from wiring damage, a bad control module, or other electrical problems.
8. How much does it cost to repair a P2064 code on an Audi?
Repair costs vary depending on the problem. Replacing a reductant pump can cost $500–$1,000, while fixing wiring or connectors is usually less expensive.
9. How can I prevent the P2064 code from recurring in my Audi?
Regularly inspect and maintain the DEF system, ensure connectors and wiring are secure and undamaged, and address any emissions-related warnings promptly.
10. Can I clear the P2064 code without fixing the problem?
Clearing the code with a scan tool will reset the check engine light temporarily, but the issue will likely return if the underlying problem isn’t resolved.
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