oxygen sensor

[angels7113]

If my ecu shows that i have a problem with my oxygen sensor how do i check it and would that cause my idle to drop and rise

[angels7113]

Is a bad o2 sensor a big deal or should i just ignore it?

[DirtyD777]

do you mean check the sensor or the ecu? If you need to check the ecu flip up the carpet and see if it blinks one quick blink, that's code 1 oxygen content. If that's not what you mean ignore what i just said..lol.

For checking the sensor I think you can take it into a dealer or mechanic and there's some machine to check if it's working properly- but I never did that.

I could tell when mine was bad because my car was running pig rich and getting terrible mpg ..also I could smell a strong gas odor in the car and would even get alittle black smoke sometimes from the exhaust. Do you have any of those symptoms?

[bambam89lx]

a new one from autozone is $11 (for the universal).

[91civichatch2571]

[angels7113]

I have already checked the ecu and it blinked twice i was told that it was the o2 sensor. My car does have a strong gas smell from time to time.