BMW DTC P1D73 – Heat Pump Temperature Sensor ‘B’ Temperature Out of Range Low
DTC P1D73 meaning on BMW
The DTC P1D73 fault code on a BMW indicates that the Heat Pump Temperature Sensor ‘B’ is reporting a temperature that is out of the acceptable range on the low end.
BMW DTC P1D73 symptoms
Symptoms of the DTC P1D73 fault code on a BMW may include poor heating performance, inconsistent cabin temperature, or the climate control system not functioning as expected.
BMW DTC P1D73 causes
The DTC P1D73 fault code on a BMW can be triggered by a faulty Heat Pump Temperature Sensor ‘B’, wiring issues, or a problem with the climate control system.
BMW DTC P1D73 seriousness
While the DTC P1D73 fault code may not cause immediate drivability issues, it can affect the comfort and functionality of the climate control system in the vehicle.
How to diagnose DTC P1D73 on BMW
To diagnose the DTC P1D73 fault code on a BMW, a mechanic would typically use a diagnostic scanner to retrieve the code and then perform further testing on the Heat Pump Temperature Sensor ‘B’ and related components to identify the root cause of the issue.
- Use a diagnostic scanner to read the fault code
- Inspect the Heat Pump Temperature Sensor ‘B’ and its wiring for any visible damage
- Test the sensor’s resistance and compare it to specifications
- Check the climate control system for any other faults
How to fix DTC P1D73 on BMW
Fixing the DTC P1D73 fault code on a BMW typically involves replacing the faulty Heat Pump Temperature Sensor ‘B’ and addressing any wiring issues or climate control system problems that may have contributed to the fault.
- Replace the Heat Pump Temperature Sensor ‘B’
- Repair or replace any damaged wiring
- Ensure proper connection and functionality of the sensor
- Clear the fault code and test the system
How to erase DTC P1D73 on BMW
To erase the DTC P1D73 fault code on a BMW, a mechanic would typically use a diagnostic scanner to clear the code after the underlying issue has been addressed and fixed.
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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