okay so i was driving today and all of a sudden my traction control light andd my check engin light came on at the same time.. the car seems to be running fine but any ideas what couldove happend...
94 sc400

 

anybody have any ideas what couldove caused the 2 lights to come on?

 

Pull DTC's-codes, its a start to troubleshoot..

 

howdo i go about getting the codes?

 

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https://www.clublexus.com/forums/sc-...r-fueling.html

I dont think Autozone checks for check engine light on pre 95' vehicles

 

okay so now i got a code 25.. any clue what that means?

 

GOOGLE it bro, Im at work and about to head home..

 

Air–Fuel Ratio Lean Malfunction comes up with that but nothing about how to fix

 

I would disconnect the battery(disconnect the negative terminal and let it sit for a few minutes-5 mins atleast) to clear the codes just to see if the check engine light will go away. Now if comes back imeditaley or a day later your going to have to diagnose into it deeper.
Now, my Mitchell OnDemand says its a faulty 02 sensor-or faulty ignition circuit. Those are just possibilties. Do you have a voltmeter? Do you know how to check the voltage on a 02 sensor?

 

yes i do have a volt meter but no i dont know how to check the o2 sensors

 

how should i go about checking the voltage

 

If you're running lean then it might be that you have a bad 02 sensor...i remember that i had that problem with mine after switching to aftermarket headers which did not have the catalytic converters.

 

okay so i picked up 2 o2 sensors.. for before the cats.. autozone gave me one wrong one and i noticed after i jacked the car up so i figured ill change one for now.. my dumb@ss didnt realise and just changed it with the o2 sensor after the cats.. now are the sensors different from before and after the cats? or can i leave that one in there and just pick up another for before the cats when i exchange the bad one?
if not is it safe to drive like that?