What happens when a DPFE sensor goes bad?
Poor Engine Performance When the DPFE sensor fails, the engine can’t run as it was designed. With a faulty sensor, the wrong information is sent back to the engine’s computer. Because of this bad data, the EGR system malfunctions. With this system not running properly, you will notice reduced power and a rough idle.
How do you change a DPFE sensor?
How to Replace the DPFE Sensor on a Ford Escape
- Remove the rubber hoses from the bottom of the DPFE sensor. The sensor is located on the firewall to the rear of the EGR valve.
- Remove the electrical connector from the sensor. Remove the two screws holding the sensor to the firewall.
- Bolt the new sensor to the firewall.
What is a differential feedback sensor?
The Differential Pressure Feedback Exhaust Sensor, or DPFE sensor, is part of the vehicle’s exhaust gas recirculation (EGR) system. The sensor monitors and measures the pressure with the EGR valve. This prevents the valve from malfunctioning and allowing too much exhaust into the intake manifold at one time.
How do you test a differential pressure sensor?
If everything passes physical inspection, you can test the DPF differential pressure sensor using a multimeter set to 20V and a pressure gauge. With the battery on and engine off, connect the multimeter ground to the negative battery terminal and run a quick plausibility by checking the voltage of the battery.
What is a DPF pressure sensor?
A diesel particulate filter (DPF) differential pressure sensor measures exhaust backpressure and signals when the power-train control module (PCM) should begin a regeneration process to clear the filter of diesel particulate matter (DPM), or soot.
What is differential pressure?
Differential pressure, in general, is a measure of pressure where the reading and reference values are variable. Differential pressure is calculated by subtracting one of these values from the other. If Pipe A flows at 100 psi and Pipe B flows at 30 psi, the differential pressure would be 70 psi.
