eml light on

[bazza]

fitted new second( in pipe) lambda sensor. light still on codes read PO136.02.  POo36.08. PO136.11. still looks like faulty lambda . have today taken it back and changed it for another new one still the same codes. cleared them but back again.    the EML did go off a couple of weeks ago but came back on after 4 days. Lambda sensor make CAMBIARE. car runs well no hesitation very smooth. I was a mechanic for 30 yrs but new territory to me , any help appreciated.