What censor is this
 

Found a unplugged censor on drivers side coming out of the exhaust manifold. the plug was under the turbo pedestal. plugged back up but no lights on before or after. what is this censor for?

Year of truck would really help.

maybe the exhaust gas temperature (aftermarket)? Was the sensor directly screwed into the exhaust manifold? How many wires in the connector?

sorry 05 f250., and no not directly screwed in has an extension tube about 6-8 inches and 2 wires.

EBP sensor

would it hurt to unplug it, never had this problem when it was unplugged. not saying its the problem. would a intake manifold leak cause this. have new gaskets on when i done all the other work

I am surprised you didn't get a code beings that it is an 05.

X2 here

I unplugged my 03 EBP sensor before and never got a CEL or Code 2 dif codereaders. I didnt run it long when it was unplugged as I thought if unplugged it would POP a CEL Imediatly NOPE.

My SGII wont pick it up either when I put the Code in

But figured an 05 would throw a CEL for it