when i charge the catalyzer to racing catalyzer,my engine light, TRC Off light, will on... is it the oxygen sensor problem

 

most likely it is the o2 sensor, u might need to replace the sensor too.

 

Are you sure you didn't press the TRAC OFF button on the panel near the shifter? Honestly, i have no idea what you are trying to say. Something about charging the Catalytic converter?

 

i didn't press the TRAC OFF button, I think is the catalytic!! coz i have charging it to Junction Produce Racing Catalytic

 

I'm pretty sure he's trying to say

"when i charng the Catalytic Converter to a racing Cat, my engine light & TRC Off light turn on. Do you guys think it is a oxygen sensor problem?"

If you replaced the Cat, it will probably trigger an engine light due to the sensor. In my Grand Prix, when they change out the Cat, you have to have a Simulated O2 to keep things working. Not sure why it would cause the traction control light to turn on though....