Check Engine Light: P0138HO2S-12 (Bank 1 Sensor 2) Circuit High Input
 

I have had issues with my O2 sensors for a while. I'd really like to get the check engine light to go off and stay off.

In June of 2010 I had Code P0141 and replaced all three oxygen sensors as suggested by the dealer (83k miles).

Now I have code P0138. I was recently at the dealer and had the ECM software updated and all recalls addressed. I didn't pay the $83 for them to read the diagnostic code.

Today I replaced the second o2 sensor (accessible from engine compartment, the one closer to the ground with the orange wire sheath) with the one I pulled two years ago.

#1) did I switch the right oxygen sensor?
#2) is this a faulty O2 sensor problem or something else? Is there any other diagnostic I can run myself before going back to the dealer?

Thanks,

Tim

Re: Check Engine Light: P0138HO2S-12 (Bank 1 Sensor 2) Circuit High Input
 

(this is a 2003 Honda Civic Hybrid, by the way, currently with 120k miles)

Re: Check Engine Light: P0138HO2S-12 (Bank 1 Sensor 2) Circuit High Input
 

Great these wonderful O2 sensor Code I wish they just get away with them completely let me know what happens.