What sensor is this? (on the intake mani)

[99gst_racer]

What sensor is this and what does it do?

 

[IHeartTurbo]

Manifold Absolute Pressure or MAP

 

[Syndicate13]

Manifold Absolute Pressure or MAP

Wrong. It's the MDP or Manifold Differential Sensor. All it does is ensure the EGR valve is working. If you unplug it you'll get a CEL.

 

[IHeartTurbo]

Wrong. It's the MDP or Manifold Differential Sensor. All it does is ensure the EGR valve is working. If you unplug it you'll get a CEL.

An MDP is the same as an MAP. Just the MDP reads pressure as well as vacuum. In essence it is the same thing. And no, it doesn't just ensure the EGR is working. When the key is turned on, it reads barometric pressure. And while the car is running it reads pressure/vacuum in the intake mani.