quick question SC drivers, in adventure in fixing all the issues with car and maintenance related items i still haven't resolved the check engine light and trac light issue....Now i have completed tbelt service, fuel filter, driv side coil, distributor caps and buttons, cleaned throttle bottle, and both those lights still come on together at the same time after a few min of driving and i am assuming they are connected to the random misfire i have during acceleration......so my question is wht sensor or part could be faulty that causes both these lights to come on together ive searched already and didnt find any real answer or info....

 

I pulled the diagnostic code on my car and it said it was the rear O2 sensors. I replaced them, and my CEL and Trac light turned off. Its been 2 weeks and its still good.

 

i have a sc300 but it was o2 sensor on mine also good luck

 

good looking out it imma try to swap out my sensors probly just gonna swap the main ones sense 400's have a bunch of o2 sensors...

 

on my 92 it was just the o2 sensors just find the bad ones then change them, and that should cut it off or do what i did and just change them all just to save time on having to change the other ones lol

 

Traction control is disabled when the CEL comes on by default. There is a reason, I know it but dont feel like typing it out. Just know that it doesnt mean anything is wrong with it, just the way the system was designed.