BMW DTC P1A90 – DC/DC Converter Internal DC Link Discharge – Discharge Time 1 Too Long
DTC P1A90 meaning on BMW
The DTC P1A90 on a BMW refers to the DC/DC Converter Internal DC Link Discharge – Discharge Time 1 Too Long. This diagnostic trouble code indicates that the DC/DC converter is taking too long to discharge the internal DC link, which can lead to issues with the vehicle’s electrical system.
BMW DTC P1A90 symptoms
Symptoms of the BMW DTC P1A90 may include:
- Check Engine Light illuminated
- Reduced power or performance
- Electrical system malfunctions
BMW DTC P1A90 causes
Common causes of the BMW DTC P1A90 include:
- Faulty DC/DC converter
- Issues with the internal DC link
- Electrical system faults
BMW DTC P1A90 seriousness
The DTC P1A90 on a BMW should be addressed promptly as it can lead to electrical system malfunctions and potentially affect the vehicle’s performance and drivability.
How to diagnose DTC P1A90 on BMW
To diagnose the DTC P1A90 on a BMW, a mechanic would typically:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the DC/DC converter and internal DC link for any visible damage
- Perform electrical system tests to identify any faults
How to fix DTC P1A90 on BMW
To fix the DTC P1A90 on a BMW, the following steps may be taken:
- Replace the faulty DC/DC converter if necessary
- Repair any issues with the internal DC link
- Address any electrical system faults that may be contributing to the problem
How to erase DTC P1A90 on BMW
Once the underlying issue causing the DTC P1A90 on a BMW has been resolved, the fault codes can be cleared using a diagnostic scanner to erase the code from the vehicle’s memory.