BMW DTC P2A49 – Alternative Fuel Tank ‘C’ Pressure Sensor Circuit High
DTC P2A49 meaning on BMW
DTC P2A49 on a BMW indicates an issue with the Alternative Fuel Tank ‘C’ Pressure Sensor Circuit registering a high voltage signal. This sensor is responsible for monitoring the pressure within the alternative fuel tank, which is crucial for the proper functioning of the vehicle’s fuel system.
BMW DTC P2A49 symptoms
Symptoms of DTC P2A49 on a BMW may include:
- Check Engine Light illuminated on the dashboard
- Decreased fuel efficiency
- Engine running rough or stalling
- Issues with starting the vehicle
BMW DTC P2A49 causes
The common causes of DTC P2A49 on a BMW include:
- Faulty Alternative Fuel Tank ‘C’ Pressure Sensor
- Wiring or connector issues in the sensor circuit
- Corrosion or damage to sensor components
- Issues with the fuel tank itself
BMW DTC P2A49 seriousness
Ignoring DTC P2A49 on a BMW can lead to potential drivability issues and may affect the overall performance of the vehicle. It is important to address this fault promptly to prevent further damage to the fuel system.
How to diagnose DTC P2A49 on BMW
To diagnose DTC P2A49 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 wiring and connectors associated with the Alternative Fuel Tank ‘C’ Pressure Sensor
- Test the sensor’s functionality using a multimeter
- Check the fuel tank for any signs of damage or leaks
How to fix DTC P2A49 on BMW
To fix DTC P2A49 on a BMW, the following steps may be taken:
- Replace the faulty Alternative Fuel Tank ‘C’ Pressure Sensor
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Clean or replace sensor components affected by corrosion
- Ensure the fuel tank is in good condition and free from leaks
How to erase DTC P2A49 on BMW
After addressing the underlying issue causing DTC P2A49 on a BMW, the fault code can be erased using a diagnostic scanner. This will reset the Check Engine Light and clear the code from the vehicle’s memory. It is important to verify that the issue has been resolved 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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