Mine's the asthmatic non-intercooled DCi but the senor(s) you seek are stuffed into the plastic tube that feeds air into the engine. IIRC mine has one jst downstream of the airbox reading the temp being fed intot he turbo, the other is in the plastic elbow between the turbo outlet and the EGR elbow and IIRC the wiring goes to the same loom as the pressure sensor you have found, presumably on top of the engine.
In fact the temp sensor should be very close to the pressure tube tapping that serves that sensor.
