P2064 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 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 Description
What are the Possible Causes of the DTC P2064?
- 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?
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 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 P2064 code?
Need more information on how to fix the P2064 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2064 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P2064 Audi — Reductant/Regeneration Supply Control Circuit High
- P2064 BMW — Reductant/Regeneration Supply Control Circuit High
- P2064 Dodge — Reductant/Regeneration Supply Control Circuit High
- P2064 Volkswagen — Reductant/Regeneration Supply Control Circuit High
Frequently Asked Questions about P2064 Code
What does the OBDII code P2064 mean?
P2064 indicates a problem with the reductant or regeneration supply control circuit, specifically that it is experiencing a high voltage condition.
What are the common symptoms of code P2064?
Symptoms may include the check engine light illuminating, reduced fuel efficiency, poor engine performance, or issues with the vehicle’s emissions system.
What causes the P2064 code to appear?
Possible causes include a faulty reductant pump, damaged wiring or connectors in the control circuit, a malfunctioning reductant control module, or a blown fuse.
Can I drive with a P2064 code?
Driving with this code is not recommended as it may lead to increased emissions and potentially damage other components in the emissions system.
How is the P2064 code diagnosed?
A mechanic will use an OBDII scanner to confirm the code, inspect the wiring and connectors, test the reductant pump and control module, and measure the circuit voltage.
How do you fix the P2064 code?
Repairs may involve replacing a faulty reductant pump, repairing or replacing damaged wiring, replacing the control module, or resetting the system after repairs.
What tools are needed to diagnose and repair the P2064 code?
Tools may include an OBDII scanner, multimeter, wiring diagrams, and basic hand tools for inspecting and repairing components.
How much does it cost to repair a P2064 code?
The cost depends on the exact issue, but replacing a reductant pump can range from $300 to $1,000, while fixing wiring issues may be less expensive.
Can a software update fix the P2064 code?
In some cases, a software update for the engine or emissions control module may resolve the issue, but this depends on the manufacturer’s recommendations.
Is the P2064 code specific to diesel vehicles?
Yes, this code is typically associated with diesel vehicles equipped with a Selective Catalytic Reduction (SCR) system that uses reductant fluid to reduce emissions.
Discuss the causes and fixes for P2064 OBDII Code
Code P2064 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
