You know that one of the two sensors is bad. You can spend hours
tracking down the error code to determine which one of the two is bad.
Or you can replace one. If it doesn't fix it, put the old one back in
and replace the other one.
Or, since you're probably 100k miles past the reasonable service life
of a thin platinum wire that lives in the exhaust stream, you can just
replace both and move on to something more interesting.
-rev <~~~parts changer who's time is worth more than a $25 sensor
Ninebal310 responds with:
First, let me apologize if I offended you.
Second, since I am not sure either sensor is bad (since the diagnostic
readout says it is the post-cat sensor, and I don't have a post-cat
sensor) I don't want to replace or waste my time replacing one or both.
Third, the motor only has 38k miles. I bought it new, so I know that is
Fourth, the sensor that the diagnostics says is bad costs $139.00 not
Fifth, this is a learning experience for me.
Sixth, Thanks for your response.
Hank <~~has more time than money and loves to learn