My Check Engine Light came out, and it said... my H02s Bank 1 Sen 2 circuit low.

Does anyone have an idea, what cause that, or what it means?

Thanks

______

 

do you have a header?

 

How many miles on ur Scion? Usually when a H02 code comes up there's nuttin you can do but replace the sensor.
If it has some miles its normal to have to replace O2s.
8 year 80k is emission warranty and i'm pretty sure it should be covered unless its for just cats and stuff.

 

He has a turbo and it's part greddy kit and should be part bad ___ by now. Anyway, are you running rich? Try taking the o2 sensor out and see if it's dirty, if so clean it up, put it back in , reset ecu and wait to see if the code comes up again.

Hows the kit coming? Did you get a dyno after the motor build?

 

its being tunned still, im waitting on a new MAF sensor for the intake....its been tunned at 10 pounds last weekend, im doing back today, to finsh the tunning were going for 20 pounds of boost :-D....so i should have some numbers up today or,,,,monday

 

Tuned at 20 psi???? I hope you've got some internal work done

 

lol, jup i have the whole engine rebuild, with a new fuel system...and still waitting on the new clutch tho...but everything is working good :-D

 

your h02 circuit is low. either the sensor is bad, there's an open in the circuit, or the ecu is bad. time to troubleshoot the circuit, lol.

 

na everything is good, my ecu is fine.... the sensor is bad

 

its not a matter of takin it out and cleaning. when you have a code for a heated circuit its usually a bad sensor. theres nothin u can do but replace it. not a bad ecu or dirty o2 its got a heater circuit malfunction. O2's are common in toyotas man i replace them every other day...

 

yup, i know its bad

 

hey everyone will i ran over a cat and my cel came on i scanned it and got this code ? ? ? does this mean i have to replace the senor or clean the spacer for the o2 senor ? ? ? ? lmk

 

Poor cat. I would pull it, clean it, put it back, and rest the ECU by unplugging the neg battery terminal. See what happens after you do all that.

 

I'd recommend the same thing.

Make sure u clean that sucker good, as Paul at Dezod said, "There Retardedly sensitive"

 

will, it came back on after i clean it. . . . u think i can warrenty it ? ? ? will i have mmw header + dp and cc catback trd sc stock pulley . . . ssp tein ? ? ?

 

Bring it in and see if they will. Don't tell them what happened or that you cleaned it. They'd have to prove that it 's those aftermarket parts that is the problem and they won't be able to cuz they wouldn't cause a problem.

 

whats a proper way of cleaning a sensor?

 

Ok - just so you guys know - if you get this code and wait a month ..... it will get bad one day and your car will barely be able to make it up hills due to running very very rich (you will see ...) - the code will be on ...then one day in the future just get horrible. I just replaced my sensor tonight and my car drives perfect now. so word of advice .... replace it within a few weeks of getting this code

 

anyone know where the o2 sensor is located? for this code? got the same on the wife's car. just wanted to save my self the time looking for it. I have some ideas where to look but id rather just know I'm pulling the right one.