P2064 BMW 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 BMW 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 BMW Description
What are the Possible Causes of the DTC P2064 BMW?
- 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 BMW?
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 BMW 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 BMW Code
1. What does the OBDII code P2064 mean on a BMW?
The P2064 code indicates a high voltage issue in the Reductant/Regeneration Supply Control Circuit, which is part of the exhaust aftertreatment system for reducing emissions.
2. What are the common symptoms of code P2064 in a BMW?
Symptoms may include the Check Engine Light turning on, reduced fuel efficiency, poor engine performance, and possible emission test failures.
3. What causes the P2064 code to appear on a BMW?
Common causes include a faulty reductant pump, damaged wiring or connectors in the reductant control circuit, or a malfunctioning reductant level sensor.
4. Is it safe to drive a BMW with the P2064 code?
While the car may still be drivable, ignoring this code could lead to increased emissions, reduced performance, and potential damage to the exhaust aftertreatment system.
5. How is the P2064 code diagnosed on a BMW?
A mechanic will use a diagnostic scanner to confirm the code, inspect the reductant control circuit, check wiring and connectors for damage, and test the reductant pump or sensor for faults.
6. What repairs can fix the P2064 code on a BMW?
Repairs may include replacing the reductant pump, repairing or replacing damaged wiring, cleaning or replacing the reductant level sensor, or updating the vehicle’s ECU software if needed.
7. Can a dirty reductant tank cause the P2064 code on a BMW?
Yes, contamination or a clogged reductant tank can cause issues with the reductant pump or sensor, potentially triggering this code.
8. Will clearing the P2064 code solve the problem permanently?
Clearing the code may temporarily turn off the Check Engine Light, but the underlying issue must be fixed to prevent the code from returning.
9. How much does it cost to fix the P2064 code on a BMW?
Repair costs can vary widely, ranging from $150 to $1,000 or more, depending on whether the issue is with wiring, sensors, or the reductant pump.
10. Can a software update resolve the P2064 code on a BMW?
In some cases, a software update from the dealership can address issues related to the reductant control system, but it depends on the specific vehicle and situation.
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