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#1
06-10-2006, 10:04 AM
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CEL code 1400
I was changing the plugs in my parents taurus (99 3.0L) a few days ago, and since then it has started to run alot rougher. I have checked the gap on all of them, but now I am getting Code 1400 (Differential Pressure Feedback Electronic Sensor circuit Low Voltage). I have NO IDEA what this means. Any help would be great. Also, if it is related the EGR valve is running on borrowed time allready.
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97 Rodeo 3.2L, KC Lights, Air Hog Filter, Flowmaster 50 Series, Maxxis Bighorn MT's, 2" Lift. 2004 F150 FX4, Stock, so far 
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#2
06-10-2006, 11:51 AM
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Re: CEL code 1400
That sensor is a known troublemaker,, your engine 12v or 24v??? I think it's located near the top left-side of the upper intake manifold,, I think there's two vacuum hoses and an electrical connector, price is probably around 50 bucks, just guessing... you can always pull your egr valve off, make sure it isn't all carboned up,,, make sure all your wires and hoses are still in place with that sensor, in case you knocked something off while doing plugs. My experience is that almost all the time the sensor has malfunctioned, barring disconnected or corroded items, not only with that piece, but most... Ford systems have been reliable for me..
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#3
06-10-2006, 11:53 AM
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Re: CEL code 1400
Voltage return on the Sensor is below its expected range.
DPFE sensor is most likely faulty or broken.
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#4
06-10-2006, 06:40 PM
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Re: CEL code 1400
Or the wires or the hoses might have been knocked loose when the rear plugs were changed.
__________________
Being way2old is why I need help from younger minds The sooner you fall behind the more time you'll have to catch up.  HEY Y'ALL--READ THIS Here are some of our old vehicles for sale. 
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#5
06-12-2006, 09:20 AM
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Re: CEL code 1400
Speaking of the EGR Valve, is there an easy way to get it off? I have busted alot os sockets and it still won't budge.
__________________
97 Rodeo 3.2L, KC Lights, Air Hog Filter, Flowmaster 50 Series, Maxxis Bighorn MT's, 2" Lift. 2004 F150 FX4, Stock, so far
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#6
06-19-2006, 11:52 AM
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Re: CEL code 1400
The Differential Pressure Feedback sensor will also generate a code 1401 which means the voltage return is above what is expected. Just thought I'd throw that one in there too. I replaced mine and code is gone.
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