causes:
Using a cheaper or less powerful diagnostic tool
Using a diagnostic tool that does not support your vehicle
symptoms:
This is the awkward part: you may or may never experience any vehicle problems with DTC P0000 DTC. The MIL may illuminate (or not), and you may experience drivability issues (or not)
Diagnosis:
If you only see this DTC and have no symptoms, generally you can just keep driving and not worry about it. You can clean up the code and check it later to see if the code returns. If so, you can use a more advanced diagnostic tool next time.
If you have symptoms of the problem and have other trouble codes along with P0000, you should focus on recovering the other trouble codes first.
If there are no other codes and you have symptoms of a problem, you should read the trouble codes again using a different, more advanced code scanner. Be sure to check with the tool manufacturer to see if your vehicle is supported.
SOLUTION