The trouble code should have told you which sensor was bad.

My response is in general terms.  Your truck should have at
least 2 and probably 3 sensors.  The fault codes should tell
you which one is the source of the code.  That does not mean
that the sensor is bad.  It may just mean that it is the
perveyor (messenger) of more (other) bad news.  More
diagnostic work may be required depending on the exact code.
A bad sensor may cause loss of power, increased emissions
and increased fuel consumption - so can anything else that
results in a bad sensor reading.  The sensors cannot in most
cases be cleaned. Once they are contaminated or fail, that
is just the way they remain.  They can be replaced.  The
skill required to diagnose the cause of the fault code is
much greater than that required to replace a sensor.  The
sensors are expensive.  Go back and get the exact code and
write down both the fault code and the error message instead
of going into sticker shock induced brain seizure.  Someone
here can probably get you on the right track.  You do not
want to just start throwing parts at it until you correct
the problem - that can result in severe financial distress..

Good luck
Lugnut