4.6L V8 Technical DiscussionsAny questions about engine, transmission, or gearing can be asked here!
Welcome to Mustang Forums!
Welcome to Mustang Forums.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
06 mustang gt. driving to work this morning my check engine light came on, when i got to work i hooked up my tuner and a P0442 code came up. Under the description it said Evaporative emission system leak detected. small leak .040".
What does this excatly mean?
This ad is not displayed to registered or logged-in members. Register your free account today and become a member on Mustang Forums!
Hey man, this happened to me, too. When did you put gas in the tank? You should check to make sure your gas cap is securely fitted and tightened. If it was loose, not tight enough or off-thread and you retighten it, the check engine light should go out after a small period of time. I cleared my own with my DS Trinity. I know, tightening the gas cap all the way seems like a no-brainer...but sometimes if we're in a hurry or whatever, we won't tighten it the 3 clicks like the manual says and we don't even realize it.
If its not, there are a few issues with EVAP solenoids and vents. This can be data logged by SCT PID. Plenty of threads around on it. Does it only happen at certain times? Is the engine sluggish or shutting off at all?
This forum is owned and operated by Internet Brands, Inc., a Delaware
corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford
Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor