Amongst the cali spec mirages and one lancer, few of them has unpluged the 2nd O2 sensor connection. At least, try this as a free alternative.


"ok i have no mods on my car and my service engine soon light came on.....is it just a reminder or is there a problem."

how many miles or sympthoms?

 

I have 14k miles and there are no real symptons except the stupid light is on. I would ignore it but someone else had one on in theyre eclipse and the motor quit running or something like that.