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2001 ford escape.With 3.0 liter v6. trouble code p401. possible

 

Customer Question

2001 ford escape.With 3.0 liter v6. trouble code p401. possible problem, or part to be replaced

 

Optional Information:
Year: 2001
Make: Ford
Model: Escape
Engine: 3.0 V6

Already Tried:
I have ckd vacum lines and electrical connections to parts in the egr system.

Submitted: 1094 days and 1 hours ago.
Category: Ford
Value: $23
Status: CLOSED
Picture
Expert:  Tim West replied1094 days and 1 hours ago.

Thanks for visiting Just Answer,

There is a very common problem with the tube-mounted Delta Pressure Feedback EGR (DPFE) sensor.
To test the sensor, monitor output voltage on a scanner or on the Brown/Light Green wire at the sensor. With the sensor c

REMOVAL

  1. Disconnect the battery ground cable.



  1. Remove the differential pressure feedback EGR sensor.
1 Disconnect the electrical connector.
2 Carefully remove the differential pressure feedback EGR sensor by sliding up and off the EGR tube.

NOTE: The 3.0L (4V) engine is shown, the 2.0L Zetec engine is similar.

INSTALLATION

  1. To install, reverse the removal procedure.
onnected and the key on engine off, it should be close to 1 volt. Then apply 8" vacuum to the port marked "REF" on the sensor and voltage should go over 4 volts. With the sensor disconnected, voltage should be 5 volts on the Brown/Light Green (BR/LG) and Brown/White (BR/WHT) wires and the Gray/Red (GY/R) wire should be ground. If all these readings are correct, check for a sticking EGR valve or vacuum line problems.


Customer replied1093 days and 23 hours ago.

before i except could be a little more clear on checking the valve. Should i check the volt redings on old vave before rmving it if it cks ok then go to the rgr valve.

Accepted Answer

Picture
Expert:  Tim West replied1093 days and 23 hours ago.

Well you can check these if you would like to. I can tell you replacing the DPFE sensor should fix this code. I wouldn't waste my time checking it. I feel safe just replacing it.

Expert TypeASE Certified Technician
Category: Ford
Pos. Feedback: 99.0 %
Accepts: 1353
Answered: 5/19/2010

Experience: ASE Certified Service manager of Firestone

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