Mazda 323 Automatic Year 2001

Hi,
I have a Mazda 323 vehicle, today when I was on the way on the board, a yellow light with the word Hold was lit.

Does anyone know what it can be, and where would you have to investigate where the fault could be ???

After the engine stopped walking, I turned on it again and the light was no longer on, the temperature always kept well.

I would like if someone has the manual could share

atte
July

That must be some function that is in a fixed or blocked mode, a bad contact may have pressed the function, I do not know what it can be, the same change selector, or some eggs ... Do not worry man, look for a vehicle user manual around here, someone will have, greetings