hi my name is john and i have a 97 mitsubishi 3000gt with a 3.0L engine with a sohc non turbo. my check engine light came on not to long ago and it said code p0155 witch is a oxygen sensor . i replaced the oxygen sensor and erased the code and everything was fine ,but when i turned the car off and then crank it back up the check engine light comes back on with the same code . i replaced the oxygen sensor before the catylitic converter was that the right one? because i know theres 2 more 1 for each manifold. please help!!!!!!
thanks
Jonathan