BMW DTC P2279 – Intake Air System Leak
DTC P2279 meaning on BMW
The Diagnostic Trouble Code (DTC) P2279 for BMW indicates an intake air system leak. This means that there is a problem with the intake system where unmetered air is entering the engine, causing a disruption in the air-to-fuel ratio.
BMW DTC P2279 symptoms
Symptoms of a DTC P2279 on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Engine stalling or rough idling
- Increased fuel consumption
BMW DTC P2279 causes
Common causes of a DTC P2279 on a BMW include:
- Cracked or disconnected intake hoses
- Leaking intake manifold gaskets
- Malfunctioning intake air control valve
- Dirty or faulty mass airflow sensor
BMW DTC P2279 seriousness
Ignoring a DTC P2279 on a BMW can lead to potential engine damage and decreased fuel efficiency. It is important to address this issue promptly to prevent further complications.
How to diagnose DTC P2279 on BMW
To diagnose a DTC P2279 on a BMW, you can perform the following steps:
- Use an OBD-II scanner to retrieve the fault code
- Inspect the intake system for any visible leaks or damage
- Check the intake hoses, gaskets, and air control valve for any issues
- Clean or replace the mass airflow sensor if necessary
How to fix DTC P2279 on BMW
To fix a DTC P2279 on a BMW, you can take the following actions:
- Repair or replace any cracked or disconnected intake hoses
- Replace leaking intake manifold gaskets
- Repair or replace a malfunctioning intake air control valve
- Clean or replace the mass airflow sensor
How to erase DTC P2279 on BMW
To erase a DTC P2279 on a BMW, you can use an OBD-II scanner to clear the fault code after the underlying issue has been addressed and fixed. This will reset the Check Engine Light and remove the DTC from the vehicle’s memory.
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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