Sensor, Differential Pressure: Description: Diesel
WARNING: This page is about a different car, the 2012 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Differential Pressure Sensor Wire Harness Connector, Zip Tie, Differential Pressure Sensor Hoses, Nut & Differential Pressure Sensor
The Exhaust Differential Pressure Sensor (3) is remotely mounted on the transmission housing. Two pressure tubes (4) measure pressure before and after the Diesel Particulate Filter (DPF)/Diesel Oxidation Catalyst (DOC). The sensor is critical for fail-safe of regeneration strategy, because it interprets high pressure drops as possible high soot loads.