BMW DTC P0248 – Turbocharger/Supercharger Wastegate Actuator ‘B’ Range/Performance
DTC P0248 meaning on BMW
The Diagnostic Trouble Code (DTC) P0248 for BMW refers to an issue with the Turbocharger/Supercharger Wastegate Actuator ‘B’ Range/Performance. This code indicates that the engine control module (ECM) has detected a problem with the wastegate actuator in the turbocharger or supercharger system.
BMW DTC P0248 symptoms
Symptoms of DTC P0248 on a BMW may include:
- Reduced engine power
- Decreased fuel efficiency
- Check Engine Light (CEL) illuminated on the dashboard
- Loss of turbocharger or supercharger performance
BMW DTC P0248 causes
Common causes of DTC P0248 on a BMW include:
- Wastegate actuator failure
- Wastegate actuator stuck open or closed
- Wiring or connector issues in the wastegate actuator circuit
- Software or calibration issues in the ECM
BMW DTC P0248 seriousness
DTC P0248 should be addressed promptly as it can lead to reduced engine performance and potential long-term damage to the turbocharger or supercharger system. Ignoring this code may result in further engine issues and increased repair costs.
How to diagnose DTC P0248 on BMW
To diagnose DTC P0248 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes stored in the ECM.
- Inspect the wastegate actuator for any physical damage or signs of wear.
- Check the wiring and connectors associated with the wastegate actuator for any loose connections or corrosion.
- Perform a boost pressure test to determine if the wastegate actuator is functioning correctly.
How to fix DTC P0248 on BMW
To fix DTC P0248 on a BMW, you can try the following solutions:
- Replace the wastegate actuator if it is found to be faulty.
- Repair any damaged wiring or connectors in the wastegate actuator circuit.
- Update the ECM software to the latest version to address any calibration issues.
- Perform a turbocharger or supercharger system inspection to ensure proper functionality.
How to erase DTC P0248 on BMW
To erase DTC P0248 on a BMW, you can use a diagnostic scanner to clear the fault codes stored in the ECM. After addressing the underlying issue causing the code, clearing the code will reset the Check Engine Light and ensure that the system is functioning properly.
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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