1G Bad O2 sensor?

[ariman]

hi.
I want to know if my o2 sensor is bad.
When start engine, o2 sensor has a good read, scanmaster read .12v .45v .23v .87v .65v .38v etc, but after 10 or 15 min doesn't work, scanmaster only read .00v or .02v no more.
Now when turn off engine for a 30 min and then start engine again, o2 sensor has a good read, but after 10 min failure again =(
Thank for your advise.

 

[dizily555]

Have you tried to clean off the terminals where the sensor plugs in? Clean those off and get a $1.00 packet of dielectric. Smear it on the terminals and try again, also make sure the connections aren't wiggling loose.

Hope this helps!

 

[luv2rallye]

Sounds like a bad O2: http://www.gnttype.org/techarea/ecmsensors/O2sensors.html

 

[dragon181]

also check for a boast or vacuum leak which can affect o2 readings.