one, two, three, four! Rev up your engines! It’s time for the Scotty Kilmer Channel today I’m going to show you how to replace
a bad oxygen sensor on your car, now in the case of this Toyota, the check engine
light is on, and when I put a scan tool on it, it has the code p zero zero five
one, which is oxygen sensor bank two sensor number one, now oxygen sensors are
used to measure the exhaust gas, so the engine can put the right amount of fuel
and air mixture, so that the fuel burns perfectly, and in the case of this code,
it says that the bank two sensor number one, has a problem in its heating circuit,
this sensor has a small heater built inside, so it warms up faster and works
quickly, and in these Toyota’s, they have a tendency of burning out that
circuit, so you got to replace the whole sensor, so then of course the question
arises, which is Bank two sensor one, well here’s how you tell, now bake one is
the side of the engine that has the number one spark plug in it, which is this
side, so on this Toyota v8 engine, bank two is the passenger side, so now we look
for sensor number one, so we’ll crawl under the truck to check it out, and in
this case, sensor one is up here right by the exhaust manifold, it’s the first
sensible for the catalytic converter behind the catalytic converter, there’s
another sensor right here, that’s sensor number two, now to get these sensors off
you need an oxygen sensor socket, this thing works great, it just goes on a
cheater bar then you get plenty of leverage to pull it loose, because they
get on tight, now the first thing you do is unclip the electrical connection, so
you can get the socket on, then the socket goes on and you just pull on it,
then it’s loose and you just unscrew it with your bare hands. and there’s the old
one we’ll match it up with the new one, and when I say match it up,
I mean match it up, this came with a factory Nippon Denso, always replace it
with the same brand, because regardless of what some companies may say, if you
don’t use the original equipment brand a lot of times the aftermarket ones won’t
mess with the software, and the light will stay on you’ll have problems, so
even though you might be tempted by a brand that cost less, don’t take the
chance, use the original equipment company, and before you screw it on, get
the little copper package that comes with it, and
put it on the threads, you need this so it seals correctly, then just screw it in
by hand, back into the exhaust, and finish the job by putting the socket on it and
making it nice and snug, and of course finished the job by snapping the
electrical connection back together, then start her up, and voila, no more check
engine light, so the next time one of your oxygen sensors goes bad, why not fix
it yourself, and remember if you have any car questions just visit the Scotty
Kilmer channel