Can a dpfe valve position sensor go bad?
Can a dpfe valve position sensor go bad?
If either of these sensors goes bad, they will give the computer an incorrect reading and the computer will “think” that there is incorrect exhaust gas flow and flag your P0401 low flow code. YES.. these both types of sensors do go bad. However, the DPFE sensor is a much more common failure component that the EGR valve position sensor.
Where are the EGR and dpfe sensors located?
The EGR valve position sensor is located right on the EGR valve itself while the DPFE sensor (Digital Pressure Feedback EGR) is separate from the EGR valve. It uses two hoses attached to the exhaust or exhaust manifold.
How can I block off air on my dpfe sensor?
A plastic golf tee, screwdriver bit or anything that fits snugly inside the tube to block off air will work as well: Work around #2: Take the hose off the EGR Valve like shown above, except then pull both hoses off the DPFE Sensor, and re-attach the hose that used to go to the EGR Valve, to the “Ref” hose port on the DPFE Sensor.
Where is the dpfe sensor on the firewall?
Identification of EGR system components On most Foci, the DPFE Sensor is a “Winged” Black box bolted to the firewall pretty much in the top middle, with 2 rubber hoses coming down off of it, and a 3-wire plug going into it perpendicular to the firewall.
Can a bad dpfe sensor cause check engine light warnings?
Of course, replacement of the bad DPFE sensor is the official recommended fix for this problem. However, a while longer to perform but makes for a nice semi-permanent solution that won’t cause any damage or check engine light warnings if the DPFE Sensor hasn’t completely died.
Why is the dpfe sensor less sensitive than the EGR?
The DPFE Sensor is less sensitive, and the PCM thinks less recirculated gas is being burned than is actually so. Trying to compensate, the PCM opens up the actuator too much.
What should the voltage be on a Ford dpfe?
Allow the multimeter to register the voltage. Ford DPFE sensors should read between .45 and .55 volts. All other makes should read between 0.8 and 1.0 volts. If the sensor is not within the appropriate range, the sensor is faulty and should be replaced.
How much does it cost to replace the dpfe sensor?
This can lead to legal problems and also shorten the life of your engine. Depending on your particular car, replacing the DPFE sensor along with the EGR valve should cost between $150 and $500 including labor, which also depends subjectively on where you live. Founder, owner & main author of Mechanic Base.
