OBD-II (P0401)
9 times out of 10 all you need to do is replace the D.P.F.E. Sensor
(Differential Pressure Feedback to EGR)
It is located on the side of your engine. It has 2 thick vacuum hoses leading to it. Disconnect the electrical connector and work it off of the 2 metal vacuum lines.
Recommended other B.S. To perform and check below. - Again. Go with the D.P.F.E. Sensor replacement!
If you have a junk or auto salvage yard
near you you can get one there for short money or free of charge. (Other B.S. Things to try just for giggles) are below.
* Use a vacuum pump
and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open
* Clean out the EGR valve and/or tubing to remove deposits
* Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)
* Replace the DPFE sensor (with a good quality / OEM one)
* Replace the EGR valve
OBD-II (P1450)
Usually the case there is the vacuum control solenoid is not working and needs to be checked out.
Good Luck;
Rick
SPONSORED LINKS
Wednesday, December 16th, 2009 AT 11:36 PM
