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Ask Ron Your Own Question
Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 34466
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: 8 years ago.
Category: Ford
Expert:  Ron replied 8 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 7 other Ford Specialists are ready to help you
Customer: replied 8 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 8 years ago.
Hold on and Ill send you a picture of the DPFE
Expert:  Ron replied 8 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