BMW DTC P2579 – Turbocharger/Supercharger Speed Sensor ‘A’ Circuit Range/Performance
DTC P2579 meaning on BMW
DTC P2579 indicates an issue with the Turbocharger/Supercharger Speed Sensor ‘A’ Circuit on a BMW vehicle. This fault code is triggered when the Engine Control Module (ECM) detects that the signal from the speed sensor is outside the expected range or performance parameters.
BMW DTC P2579 symptoms
Symptoms of DTC P2579 on a BMW may include:
- Reduced engine power
- Check Engine Light (CEL) illuminated on the dashboard
- Loss of turbocharger/supercharger performance
- Engine stalling or hesitation
BMW DTC P2579 causes
Common causes of DTC P2579 on a BMW include:
- Defective turbocharger/supercharger speed sensor
- Wiring or connector issues in the speed sensor circuit
- Faulty Engine Control Module (ECM)
- Turbocharger/supercharger mechanical problems
BMW DTC P2579 seriousness
DTC P2579 should be addressed promptly as it can lead to reduced engine performance and potential drivability issues. Ignoring this fault code may result in further damage to the turbocharger/supercharger system and other engine components.
How to diagnose DTC P2579 on BMW
To diagnose DTC P2579 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 turbocharger/supercharger speed sensor and its wiring for any visible damage
- Test the speed sensor using a multimeter to check for proper resistance and voltage readings
- Check the ECM for any stored codes or issues related to the speed sensor circuit
How to fix DTC P2579 on BMW
To fix DTC P2579 on a BMW, the following steps may be taken:
- Replace the faulty turbocharger/supercharger speed sensor
- Repair or replace any damaged wiring or connectors in the speed sensor circuit
- If necessary, replace the Engine Control Module (ECM)
- Verify proper operation of the turbocharger/supercharger system after repairs
How to erase DTC P2579 on BMW
After addressing the underlying issue causing DTC P2579 on a BMW, the fault code can be erased using a diagnostic scanner. This will clear the code from the ECM’s memory and reset the Check Engine Light. It is important to ensure that the repairs have been completed successfully before clearing the fault code.
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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