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Ask Ron Your Own Question
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 35497
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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1999 Ford Ranger, 2.5L. Error Code P1401 - EVP voltage ...

Customer Question

1999 Ford Ranger, 2.5L. Error Code: P1401 - EVP voltage sensor fault. What is the cause and where is the part located?
Submitted: 9 years ago.
Category: Ford
Expert:  Ron replied 9 years ago.


Thank you for asking your question on Just Answer.

The code P1401 is not set due to a bad EVAP sensor but by a bad DPFE (delta pressure feedback) sensor. This sensor is located on the passenger side of the engine compartment. See diagram. Replacing it will likely correct your concern.


Ron and other Ford Specialists are ready to help you
Customer: replied 9 years ago.
Reply to Ron's Post: your diagram is very difficult to decifer. i will just go buy a DPFE SENSOR and try to match it to the part on the engine. the diagram you sent is the same as the one in my chilton manual an i can't read it either.
Expert:  Ron replied 9 years ago.
Hold on and Ill send you a picture of the DPFE
Expert:  Ron replied 9 years ago.
Here is a clear picture and make sure you buy the upgraded plactic one, as yours may be the old metal one.graphic