Sensor, Differential Pressure: Description: Diesel
WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
The Exhaust Differential Pressure Sensor (2) is remotely mounted on the transmission housing. Two pressure tubes (3) measure pressure before and after the Diesel Oxidation Catalyst (DOC)/Diesel Particulate Filter (DPF). The sensor is critical for fail-safe of regeneration strategy, because it interprets high pressure drops as possible high soot loads.