not a good question.
So many sensors using voltage pressure etc.
They're all pretty much testable given the right equipment but you have to know which sensor is possibly faulty to know what test and what equipment.
Have you had it scanned?

1/4drive
June 2017

If you are talking about engine issues, a good first move is to get the engine management unit fault codes read.

Remember an apparent fault with a "sensor" could equally well be another issue - wiring or in the connection to the sensor. Its only a guide.

Why not post a followup question that gives a brief, objective and accurate description of the problem you are trying to solve. After all, we only have your assertion it is a sensor problem.

acp
June 2017