What Effect if one O2 Sensor not working??

[Victorj]

Hi,
If the O2 sensor on one bank is not working, ie showing no activity as a code, will that cause that bank to run rich or lean?? I don't show any other codes but engine feels a little rough on acceleration?? 98 Firebird

Thanks

[Tom Rs]

Re: What Effect if one O2 Sensor not working??

i would think rich if i had to guess.

[ravenp]

Re: What Effect if one O2 Sensor not working??

Hi,
If the O2 sensor on one bank is not working, ie showing no activity as a code, will that cause that bank to run rich or lean?? I don't show any other codes but engine feels a little rough on acceleration?? 98 Firebird

Thanks

The ecm will flood that bank with fuel making it very rich to play it safe, but i wouldnt' drive agressively until you have it fixed... you'll probably want to replace the plugs on that side once you've fixed it too.

[SilverDevil]

Re: What Effect if one O2 Sensor not working??

I had all 3 of my O2 sensors go out at one time and my car ran like crap...it was way too rich b/c the computer got no readings from the sensors.

[CamaroRob97]

Re: What Effect if one O2 Sensor not working??

The care will run off parimeters are set in the PCM if the o2 doenst work. Its a rich mixture so noithing is damaged. The cars gas mileage would be similer like the car never got into closed loop.

[matt3989]

Re: What Effect if one O2 Sensor not working??

depending on which one it is, it may make only one bank rich