BMW DTC P1479 – Air Mass Flow Sensor (Bank 2) Defective
DTC P1479 meaning on BMW
DTC P1479 on a BMW indicates a fault with the Air Mass Flow Sensor in Bank 2. The Air Mass Flow Sensor measures the amount of air entering the engine, which is crucial for the engine control unit to calculate the correct air-fuel mixture for combustion.
BMW DTC P1479 symptoms
Symptoms of a defective Air Mass Flow Sensor (Bank 2) in a BMW may include:
- Decreased engine performance
- Poor fuel efficiency
- Engine stalling or hesitation
- Check Engine Light illuminated
BMW DTC P1479 causes
The common causes of DTC P1479 on a BMW are:
- Failed Air Mass Flow Sensor
- Wiring or connector issues
- Vacuum leaks
- Air intake system leaks
BMW DTC P1479 seriousness
Ignoring DTC P1479 on a BMW can lead to poor engine performance, reduced fuel efficiency, and potential engine damage over time. It is recommended to address this issue promptly to prevent further complications.
How to diagnose DTC P1479 on BMW
To diagnose DTC P1479 on a BMW, you can perform the following steps:
- Use an OBD-II scanner to retrieve the fault code
- Inspect the Air Mass Flow Sensor and its wiring for any visible damage
- Check for vacuum leaks or air intake system leaks
- Perform a diagnostic test to verify the sensor’s functionality
How to fix DTC P1479 on BMW
To fix DTC P1479 on a BMW, you can follow these steps:
- Replace the faulty Air Mass Flow Sensor in Bank 2
- Repair any damaged wiring or connectors
- Address any vacuum leaks or air intake system leaks
- Clear the fault code and reset the Check Engine Light
How to erase DTC P1479 on BMW
To erase DTC P1479 on a BMW, you can use an OBD-II scanner to clear the fault code from the engine control unit’s memory. Once the issue has been addressed and fixed, clearing the fault code will reset the Check Engine Light.
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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