What does DPFE stand for on a Ford?

Differential Pressure Feedback Electronic
DPFE (Differential Pressure Feedback Electronic) Sensors are an integral part of the EGR (Exhaust Gas Recirculation) System. The DPFE Sensor provides information to the Powertrain Control Module (PCM) to tell it how much exhaust gas is flowing through the system.

How do you test a bad DPFE sensor?

How to Test the DPFE Sensor

1. Open the hood of the vehicle.
2. Disconnect the two vacuum hoses from the sensor by giving them a firm tug.
3. Turn the ignition key to the “On” position.
4. Connect the negative (black) multimeter lead to a ground point, such as the negative battery terminal.

What is code P0402?

Exhaust Gas Recirculation
Diagnostic Trouble Code (DTC) P0402 stands for Exhaust Gas Recirculation “A” Flow Excessive Detected. It indicates that the powertrain control module (PCM) has detected excessive EGR. It is one of the generic diagnostic trouble codes in a number of makes and models that are related to the vehicle’s EGR.

What does the code P1401 mean?

Error Code P1401 is defined as DPFE (Differential Pressure Feedback Sensor) Error. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as Ford and Hyundai.

What to do if your dpfe sensor is not working?

Step 1) Check the condition of the vacuum hoses going to the DPFE sensor and the EVR. Look for cracks or tears. Replace the hose if you find any. Step 2) Check the operation of the DPFE with the engine off, key in the run position. Using a digital voltmeter, check for voltage on the brown/light green wire.

How does the dpfe sensor work on a Chevy Silverado?

With the pintle off its seat, exhaust pressure forces exhaust gas up through the EGR tube, the EGR valve, and into the intake manifold at port 4. On the way up to the EGR valve, the exhaust gas passes through a restriction. The DPFE sensor hoses are connected to ports 1 and 2—before and after the restriction.

How does a dpfe sensor work on an EGR valve?

On the way up to the EGR valve, the exhaust gas passes through a restriction. The DPFE sensor hoses are connected to ports 1 and 2—before and after the restriction. By comparing and reporting the differences in pressure, the computer can determine exactly how much exhaust gas is flowing through the EGR valve.

What is the EGR sensor on a Ford truck?

The main purpose of the EGR system is to reduce the amount of nitrogen oxide that the engine releases during combustion. Ford often uses the DPFE sensor for its various vehicle models. The most common car model is probably the F-150. EGR, which stands for “ Exhaust gas recirculation “, is a mechanism that controls exactly what the name suggests.