BMW DTC P2064 – Reductant/Regeneration Supply Control Circuit High
DTC P2064 meaning on BMW
DTC P2064 on a BMW indicates an issue with the Reductant/Regeneration Supply Control Circuit being detected as high. This code is related to the system that controls the supply of reductant (commonly known as diesel exhaust fluid or DEF) for the selective catalytic reduction (SCR) system in the vehicle.
BMW DTC P2064 symptoms
Symptoms of DTC P2064 on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Possible DEF system warnings
BMW DTC P2064 causes
Common causes of DTC P2064 on a BMW include:
- Faulty reductant control module
- Issues with the reductant supply pump
- Wiring or connection problems in the control circuit
BMW DTC P2064 seriousness
DTC P2064 should be addressed promptly as it can lead to reduced fuel efficiency and increased emissions. Ignoring this code may result in the vehicle failing to meet emission standards and potential damage to the SCR system.
How to diagnose DTC P2064 on BMW
To diagnose DTC P2064 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and related data
- Inspect the reductant control module and wiring for any visible damage
- Test the reductant supply pump for proper operation
- Check the connections and grounds in the control circuit
How to fix DTC P2064 on BMW
To fix DTC P2064 on a BMW, the following steps may be taken:
- Replace the faulty reductant control module if necessary
- Repair or replace any damaged wiring or connections in the control circuit
- If the reductant supply pump is faulty, it should be replaced
- Clear the fault code and perform a test drive to ensure the issue is resolved
How to erase DTC P2064 on BMW
To erase DTC P2064 on a BMW, a diagnostic scanner can be used to clear the fault code from the vehicle’s memory. After the repair has been completed, the code can be erased to reset the Check Engine Light and ensure that the issue has been resolved.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
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