'check Engine Light' Shows Up Again!

[camlex]

hello

i don't know what i did wrong while i was cleaning the throttle body, but something went wrong. After i was done cleaning it, the check engine light showed up. code was 0150. so i replaced both Sensors from toyota and reset the light by unplugging negative battery wire for 15 minutes. after one day, i got that light again...so i went to toyota and told them the Sensor was bad. so i replaced and reset the light again, and guess what? I GOT THE CHECK ENGINE LIGHT AGAIN! does anybody know what is going on here? should i just take it to the lexus stealer?

thanks in advance

(that light is really bothering me)

[camlex]

Bump.......

[Toysrme]

P0150 Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 1)

Check the sensor's wiring if the sensor is good.

[camlex]

Thanks,

After installing first from toyota i had same code. so they replace with another new one.

Two new sensor from toyota can't be bad. Some thing else is messing up.

Same code again. After reset i started car and move O2 sensor wiring but code didn't show up.

Also i noticed while driving on freeway (High speed) light never come. But at light while car is idling it's shows.

How to check wiring?

Needs help.

[Toysrme]

see if it's damaged. Shorting to ground, or not passing a signal back to the ECU.

[camlex]

Toysrme,

Thank you.

I will check tomorrow.

Thanks,

[camlex]

Is any relationship between MAF and O2 sensor?

Because, after cleaning MAF, I got CEL.

Thanks,