Engine Light and Tracking Light on

My 98 Toyota Camry engine light is turn on and never turn off. I brought to Toyota dealer to check and they told me O2 sensors are bad (3) and recommended to replace its. I agreed to let them replaced these sensors but the engine light is still on after they replaced new sensor (yes they replaced new sensors not faked) and bring back to this dealer to recheck and now they're telling me that ECN's is bad!!! I am bring my car back and just driving for week and now other light come on TRACKING OFF this light come on when I am quickly stopped (I tried to turn it on off but the light is still on). Please give me an advise!

Did you ever have them reset the ECMs trouble codes after having them put it on the computer? If not, you should do this yourself by locating the EFI fuse/relay and pull it out. Or you could always try it the simple way, disconnect the battery for five minutes and reconnect it.

Thank you for your help!
I will try to disconnect battery and I hope it will work.

All right, you're very welcome. Best of luck to you.

I am disconnecting battery but tracking off light is back on after 30 seconds and engine is back on after turn engine off for 30 seconds and back on. Now all lights are back on when I turn on engine and do you think it's ok I can drive with lights on?
Thanks,

I actually think it will be all right if you still drive the car, although be sure that it's only temporary. You should go to a local shop somewhere near you and have them put it on the computer to find out what's wrong with it electronically as soon as possible.

Again, Thanks.