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  #1  
Old 10-11-2003, 03:02 PM
911medic 911medic is offline
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1999 Mercury Mountaineer
I have been getting an ERROR CODE P0401 (EGR Flow Insufficient)

Does anyone know what this codes indicates and possibly how to correct it?
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Old 12-06-2003, 10:29 PM
freezin-mybunz-off freezin-mybunz-off is offline
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Re: 1999 Mercury Mountaineer
try replacing the egr valve.
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Old 03-12-2005, 01:30 PM
jmmilleritc jmmilleritc is offline
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P0401 Egr Code
I too am getting this code. I've replaced the EGR valve, the Vacuum Solenoid, and on a suggestion of a friend the PCV valve all to no avail.

And now I'm also getting a P0125 Closed loop fuel CTRL Insufficient Coolant temp. Can anyone give me some direction on what to try next?
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