BMW DTC P0071 – Ambient Air Temperature Sensor Circuit ‘A’ Range/Performance
DTC P0071 meaning on BMW
The Diagnostic Trouble Code (DTC) P0071 for BMW refers to the Ambient Air Temperature Sensor Circuit ‘A’ Range/Performance. This code indicates that there is an issue with the ambient air temperature sensor circuit, specifically related to its range or performance.
BMW DTC P0071 symptoms
Symptoms of DTC P0071 on a BMW may include:
- Inaccurate ambient temperature readings on the vehicle’s display
- Possible impact on the engine’s performance or fuel efficiency
- Malfunction indicator light (MIL) or check engine light illuminated on the dashboard
BMW DTC P0071 causes
Common causes of DTC P0071 on a BMW include:
- Faulty ambient air temperature sensor
- Wiring or connector issues in the ambient air temperature sensor circuit
- Corrosion or damage to sensor connections
BMW DTC P0071 seriousness
While DTC P0071 may not directly affect the drivability of the vehicle, it is still important to address this issue. Ignoring this code can lead to inaccurate temperature readings and potential impacts on the engine’s performance and fuel efficiency.
How to diagnose DTC P0071 on BMW
To diagnose DTC P0071 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 disconnected connections in the sensor circuit
How to fix DTC P0071 on BMW
To fix DTC P0071 on a BMW, you can try the following solutions:
- Replace the ambient air temperature sensor if it is found to be faulty
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Clean any corrosion from the sensor connections
How to erase DTC P0071 on BMW
To erase DTC P0071 on a BMW, you can use a diagnostic scanner to clear the fault code from the vehicle’s memory. After addressing the underlying issue causing the code, you can reset the code to see if it reoccurs.
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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