o2 sensor location? ej20e bg

[DaktaPhil]

hey guys,

car is throwing me an error code for a bad o2 sensor (according to the internet) and it displays all the symptoms of a bad o2 sensor, hard starting and hesitation.

but i cant for the life of me find the bloody thing.

its meant to be on the cat heat shield thing right? the one that says subaru on it with the rusty nuts and bolts, where the two pipes join into one

am i meant to remove it first? i would have already, except there are no wires anywhere near it and it looks like it\'ll be a bitch

any help would be appreciated

the car is a nz new 96 legacy wagon with sohc engine in it.

[Zeus]

Exhaust manifold? Driver side

[DaktaPhil]

dont think so, unless im completely blind and just missing it

i pretty much ran my hand down the whole exhaust looking for a plug but nothing.

there is a unused plug with three pins at the back of the engine bay, in that drivers side opening which looks down at the cat

on this piece here?

it does look like its been replaced at some point as the other side has shielding over it

this is the plug,

anyone know what its for?

[Kiwi_Fozze]

O2 could be further down the pipe, further towards where it joins behind the catalytic converter, under the car....

[DaktaPhil]

yea, ive left the car jacked up and been going under every now and then hoping i might have missed it. but no dice.

the car also threw an error code of either 59 or 49. anyone know what that is? the fast flashes is definitely a nine (or at least i think it is after counting it about 50 times) but it changes from slow flash to fast flash far too fast.

could it be possible my car has been running without one for the past four years i have owned it?

[B4_685]

Have a look just downstream of exhaust manifold merge and aft of the rear catalytic converter

B4_685 via Tapatalk HD

[B4_685]

Hey man - any luck?

[DaktaPhil]

bit late but meh,

worth a bump to say i couldnt find it? lol.

my car has the one cat where it joins, then a resonator and a muffler.

i just gave up, chucked in some injector cleaner and reset the ecu

towards the end of the tank it got better, and now she fires up and drives just like she did before.

thanks for the info though.