after some weeks my ecu pulled me that code.

for fixed i have done this:
clean and test EGR valve..........................its ok
clean and remove carbon dust on egr pipe..............ok
put new gaskets on egr valve, pipes...................ok
clean and test temp egr sensor........................ok
change all the hoses..................................ok


any sugestion?? maybe i missing somethign? i dont know what happen...after i clean my TB this code was common on my cel

 

any???