o2 sensor

[fredoe]

I have a 96 Avalon.I changed the 02 sensor 3 times,and light wont go off.I put in a factory sensor from toyota.Light wont go off.I changed the one near the radiator.Put it back on the computer,and still says o2 sensor.Cleared code,and still.I give up.Anyone knows wass up?

[BMR]

What code are you getting? It could be the O2 sensor for the rear bank, or it could be the one down by the catalytic converter.

[avalonian]

He said he replaced the O2 sensor 3 times.

I myself am having the same Engine Light. I have not changed it yet. Hopefully mine is just that.

Good luck with yours.

[BMR]

Originally Posted by avalonian

He said he replaced the O2 sensor 3 times.

Yeah, I saw that. Thing is, there are three different O2 sensors. He may have replaced the wrong one three times. There's one in the front bank's manifold, a second is in the rear bank's manifold, and a third is in the exhaust pipe near the catalytic converter. Hooking up a diagnostic tool and reading the specific error code will tell which one is bad.

[edge10]

Make sure you use a newToyota or Denso (oem suppler) brand sensor, or you are likely to have problem. If you determined you are replacing the correct sensor, then the other possibilities are you a have a problem with the ECU or the wiring to the sensor.