BMW DTC P124F – NOx Sensor Signal Not Available During Operation (Bank 2)
DTC P124F meaning on BMW
DTC P124F on a BMW indicates that the NOx (Nitrogen Oxide) sensor signal is not available during operation in Bank 2 of the engine. The NOx sensor is responsible for monitoring the levels of nitrogen oxide in the exhaust gases, which is crucial for emissions control and ensuring the vehicle meets environmental regulations.
BMW DTC P124F symptoms
Symptoms of DTC P124F on a BMW may include:
- Check Engine Light illuminated
- Reduced engine performance
- Increased fuel consumption
- Possible emission of higher levels of nitrogen oxide
BMW DTC P124F causes
Common causes of DTC P124F on a BMW include:
- Defective NOx sensor
- Wiring or connector issues in the NOx sensor circuit
- Software or calibration issues
- Exhaust system leaks
BMW DTC P124F seriousness
DTC P124F should not be ignored as it can lead to increased emissions, reduced engine efficiency, and potential damage to other components of the emissions control system. It is important to address this issue promptly to ensure the vehicle operates within regulatory standards.
How to diagnose DTC P124F on BMW
To diagnose DTC P124F on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the NOx sensor and its wiring for any visible damage
- Check for exhaust leaks that could affect sensor readings
- Perform a sensor test to verify functionality
How to fix DTC P124F on BMW
To fix DTC P124F on a BMW, the following steps may be taken:
- Replace the faulty NOx sensor
- Repair any damaged wiring or connectors in the sensor circuit
- Update software or calibration as needed
- Address any exhaust leaks in the system
How to erase DTC P124F on BMW
To erase DTC P124F on a BMW, a diagnostic scanner can be used to clear the fault codes after the underlying issue has been addressed. Once the repairs have been made, the codes can be reset to turn off the Check Engine Light and ensure proper operation of the vehicle.
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.