BMW DTC P0073 – Ambient Air Temperature Sensor Circuit ‘A’ High
DTC P0073 meaning on BMW
The Diagnostic Trouble Code (DTC) P0073 for BMW refers to the Ambient Air Temperature Sensor Circuit ‘A’ High. This code indicates that the signal from the ambient air temperature sensor is reading higher than the expected value.
BMW DTC P0073 symptoms
Symptoms of DTC P0073 on a BMW may include:
- Inaccurate temperature readings on the vehicle’s display
- Incorrect climate control operation
- Possible illumination of the Check Engine Light
BMW DTC P0073 causes
Common causes of DTC P0073 on a BMW include:
- Faulty ambient air temperature sensor
- Wiring or connector issues in the ambient air temperature sensor circuit
- Corrosion or poor connections in the sensor circuit
BMW DTC P0073 seriousness
While DTC P0073 is not a critical issue that affects the drivability of the vehicle, it can lead to inaccurate temperature readings and affect the performance of the climate control system. It is recommended to address this issue to ensure proper operation of the vehicle’s systems.
How to diagnose DTC P0073 on BMW
To diagnose DTC P0073 on a BMW, you can follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the ambient air temperature sensor and its wiring for any visible damage or corrosion
- Test the sensor’s resistance and voltage output to ensure it is functioning correctly
- Check for any loose or damaged connections in the sensor circuit
How to fix DTC P0073 on BMW
To fix DTC P0073 on a BMW, you can try the following:
- Replace the ambient air temperature sensor if it is found to be faulty
- Repair any damaged wiring or connectors in the sensor circuit
- Clean any corrosion from the connections and ensure they are secure
How to erase DTC P0073 on BMW
To erase DTC P0073 on a BMW, you can use a diagnostic scanner to clear the code after the underlying issue has been addressed. This will reset the Check Engine Light and allow you to monitor the system for any recurring faults.
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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