I keep getting po455, even with new gas cap

Question

I have an 01 Ford Taurus which kept showing po455 & po457. Well, I replaced the gas cap with an OEN cap, erased the code, but it still comes back. I am stumped and would like your opinion as to the next step? Thank you for any information

Answer 1

Looks like there is an small leak on the EVAP system. The next step is check for leak with an smoke machine. You local shop should be able to do that.

P0455 FORD - Evaporative Emission Control System Leak Detected Gross Leak

Read more: https://www.autocodes.com/p0455_ford.html

P0457 FORD - EVAP Control System Leak Detected Fuel Filler Cap Loose/Off

Read more: https://www.autocodes.com/p0457_ford.html