My car runs good for few minutes and after slowing, if I accelerate the car moves slowly even after high rpm. I scanned with a LED test lamp and found the flashes. Please help me to interpret the OBD flashes.

At the beginning there is a long flash and each cycle I get the following flashes.
long---------long--short--short-short----------long--short-short-----------long--short--short--short--short-short--short--short--short

If it's a 2-digit code then the code is 13,12 and 18
If it's a 4-digit code then the code is 0328
Which one I have to consider?

Is my vehicle OBD1 or OBD2?
The vehicle is 2000 year model
Also please give me the link to download the repair manual for this model