BMW DTC P1D40 – A/C Compressor Motor Input Current Sensor Current Out of Range High
DTC P1D40 meaning on BMW
- DTC: Diagnostic Trouble Code
- P1D40: A/C Compressor Motor Input Current Sensor Current Out of Range High
- On BMW vehicles, this code indicates that the input current sensor for the A/C compressor motor is detecting a current that is higher than the expected range.
BMW DTC P1D40 symptoms
- Malfunction indicator light (MIL) or check engine light may illuminate
- Reduced or no cooling from the air conditioning system
- Unusual noises coming from the A/C compressor
BMW DTC P1D40 causes
- Faulty A/C compressor motor
- Short circuit or open circuit in the wiring related to the A/C compressor motor input current sensor
- Issues with the input current sensor itself
BMW DTC P1D40 seriousness
- If left unresolved, this issue can lead to further damage to the A/C compressor system and may result in the A/C system not functioning properly.
- It is recommended to address this problem promptly to avoid potential costly repairs.
How to diagnose DTC P1D40 on BMW
- Use a diagnostic scanner to retrieve the fault codes and perform a comprehensive scan of the A/C system
- Inspect the wiring and connections related to the A/C compressor motor input current sensor
- Test the A/C compressor motor and the input current sensor for proper functionality
How to fix DTC P1D40 on BMW
- Replace the faulty A/C compressor motor if necessary
- Repair any wiring issues or replace damaged wiring related to the input current sensor
- Replace the input current sensor if it is found to be faulty
How to erase DTC P1D40 on BMW
- After completing the necessary repairs, use a diagnostic scanner to clear the fault codes from the vehicle’s memory
- Ensure that the repairs have resolved the issue before clearing the fault codes