BMW DTC P1D1E – Electric A/C Compressor Control Module Internal Temperature Sensor ‘B’ Circuit Low
DTC P1D1E meaning on BMW
DTC P1D1E on a BMW refers to the Electric A/C Compressor Control Module Internal Temperature Sensor ‘B’ Circuit Low. This diagnostic trouble code indicates that there is a low voltage condition detected in the internal temperature sensor ‘B’ circuit of the electric A/C compressor control module.
BMW DTC P1D1E symptoms
Symptoms of BMW DTC P1D1E may include:
- Malfunction indicator lamp (MIL) illuminated
- Reduced cooling performance from the A/C system
- Climate control system not functioning properly
BMW DTC P1D1E causes
Possible causes of BMW DTC P1D1E include:
- Faulty internal temperature sensor ‘B’
- Wiring or connection issues in the sensor circuit
- Defective electric A/C compressor control module
BMW DTC P1D1E seriousness
While BMW DTC P1D1E may not cause immediate drivability issues, it can affect the proper functioning of the A/C system, leading to discomfort for the occupants and potentially causing further damage if left unresolved.
How to diagnose DTC P1D1E on BMW
To diagnose BMW DTC P1D1E, a mechanic would typically:
- Use a diagnostic scan tool to retrieve the fault codes
- Inspect the internal temperature sensor ‘B’ and its wiring for any visible damage
- Test the sensor’s resistance and voltage readings
- Check the electric A/C compressor control module for proper operation
How to fix DTC P1D1E on BMW
To fix BMW DTC P1D1E, the following steps may be taken:
- Replace the faulty internal temperature sensor ‘B’
- Repair any damaged wiring or connections in the sensor circuit
- If the electric A/C compressor control module is defective, replace it
- Clear the fault codes using a diagnostic scan tool after repairs
How to erase DTC P1D1E on BMW
To erase BMW DTC P1D1E, follow these steps:
- Use a diagnostic scan tool to access the vehicle’s onboard computer system
- Select the option to clear the fault codes or reset the system
- Follow the prompts on the scan tool to confirm the deletion of the DTC P1D1E code
- Verify that the code has been successfully erased by checking for any remaining fault codes
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
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.