2002 taurus 3.0 OHV.
Check engine light came on last week. Ordered maxiscan ms300 code reader on amazon. Had some rough idle today, Code reader came and
code reads 1 error, P1633.
Anyone know anything about this P1633? From what I see on the net it could be the cars computer. Only how can it even give the code then


?
Im confus

Used the code scanner to erase the code and it comes right back.
Thanks!