BMW DTC P1455 – Throttle Control Incorrect Air Supply (Bank 2)
DTC P1455 meaning on BMW
DTC P1455 on a BMW indicates a Throttle Control Incorrect Air Supply issue in Bank 2. This fault code is triggered when the Engine Control Module (ECM) detects that the actual airflow entering the engine does not match the expected airflow as calculated by the ECM.
BMW DTC P1455 symptoms
Symptoms of DTC P1455 on a BMW may include:
- Reduced engine power
- Engine stalling or hesitation
- Check Engine Light (CEL) illuminated on the dashboard
- Rough idling
BMW DTC P1455 causes
Common causes of DTC P1455 on a BMW include:
- Faulty throttle body
- Dirty or clogged air filter
- Vacuum leaks in the intake system
- Issues with the Mass Airflow Sensor (MAF)
BMW DTC P1455 seriousness
DTC P1455 should not be ignored as it can lead to drivability issues and potential engine damage if left unresolved. It is recommended to address this fault code promptly to prevent further complications.
How to diagnose DTC P1455 on BMW
To diagnose DTC P1455 on a BMW, you can perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the throttle body for any signs of damage or malfunction
- Check the air filter for dirt or clogs
- Inspect the intake system for vacuum leaks
- Test the Mass Airflow Sensor (MAF) for proper operation
How to fix DTC P1455 on BMW
To fix DTC P1455 on a BMW, you can try the following solutions:
- Clean or replace the throttle body if faulty
- Replace the air filter if dirty or clogged
- Repair any vacuum leaks in the intake system
- Replace the Mass Airflow Sensor (MAF) if defective
- Clear the fault code and reset the ECM
How to erase DTC P1455 on BMW
To erase DTC P1455 on a BMW, you can use a diagnostic scanner to clear the fault code from the ECM’s memory. After fixing the underlying issue causing the fault code, clearing it from the system will reset 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
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