98 civic lx, check engine light, code reads P0135 02 sensor heater circuit malfunction (bank1, sensor 1), I assume -thru a bit of research- I need to replace the top 02but have heard lots of chatter about other possibilities, any thoughts ?

 

http://www.gnttype.org/techarea/ecms...O2sensors.html

 

I found a possible solution for this problem:

https://www.hondacivicforum.com/m_501475/tm.htm

 

it's the o2 sensor