2001 Nissan Sentra Q&A

2001 Nissan Sentra Question: why causes a transmission to go into failsafe mode?

My car is apparently only running on third gear and does not seem to shift to other gears. -
Answer 1
ITS 2ND GERA AND YOU MUST HAVE TRANS CODES TO MAKE IT DEFAULT TO FAIL SAFE. GET A FREE DIAG AND EST FROM AAMCO THEN CK PRICES -