I would appreciate any help with my issue. I have the 401 code but I need voltage readings to help diagnose the problem. The connector has 3 wires. I have 4.7 volts on 2 of the wires Key on engine off. Could anybody check their wires and report back on the voltage readings. Of particular concern is the Brown with Light Green striped wire. That is the return signal from the sensor. Mine has 4.7 volts and I do not think it should.

 

Hey.

I don't have one to check, but Google brings up some troubleshooting hits - here's one, while you wait for Jbrew to reply :

http://www.slideshare.net/Fordlovers/ford-dpfe

MGD

 

This is a good sensor ~

http://picasaweb.google.com/jbrew393...07882591006386

 

You still need a check "Key Off " ? I can do that.

 

I appreciate all the answers but I really need the voltage values of that Brown with Light Green wire. Unplugged, I forgot to mention that it was unplugged when tested, with Key on Engine off it reads 4.7v. This wire should not have any voltage with the connector unplugged or less than ½ a volt.

EDIT The reason for the request is that I suspect that this wire is either shorted to the 5v reference or the PCM is FUBAR'd.

 

I posted before you posted this. Yes please. If you don't mind.

Thanks

 

Alright, I'll check it , right now.

 

Hang on, I can't find my keys. :o

 

Yea it's hot, I got , Key On ~

5.06 Brown/Grn stripe.
5.06 Brown/Wht stripe.

Middle wire, I got 0.03

I have the Aluminum DPFE, so it's going to be a little dif on voltage.

 

Key off I get barely anything on the Brown/Grn = 0.02

"0" on the other two.

 

Here's Scorpio's data buddy -(uk) ~

http://www.fordscorpio.co.uk/egrsensors.htm

 

- I haven't seen that one , that's a keeper

 

Thanks jbrew. That is exactly what I needed. My ref voltage was 4.7 last time I checked but both those wires were the same. I can now proceed with my diagnosis.

 

No problem

 

Dang Jbrews too fast, I was gonna say I remember vaguely that it was on the list of sensors with the 5v Vref wire.