• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


P219A Code

Messages
37
Likes
32
Location
Spring, TX
#1
Car has intermittently thrown a P219A: Aif-Fuel Ratio Imbalance

Any quick checks fixes common this one to look into?

No performance effect that I can tell. Only possible symptom is it's averaging around 27mpg, but I've been having fun with it too, so that likely contributes to the lower MPG.
 


OP
JAMADOR
Messages
37
Likes
32
Location
Spring, TX
Thread Starter #2
Seems to have resolved itself? Haven't scanned codes, but the CEL is off now after about 100 miles on a fresh tank of gas [Shell 87]
Last tank was Costco 87
 


Grsemky

Member
U.S. Navy Veteran
Messages
147
Likes
101
Location
Arizona
#3
Try using premium gas.... I personally only put 91 in it, I live in AZ and get that California 91... My MPG averages 30.1 combined
 




Top