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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?
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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?
Us 2010 guys don't have that problem, there ain't no gas cap
I just recieved this DTC (P0442) this morning. Hooked up the SCT, deciphered it, jumped on the forums and mostly getting this gas cap crap. Well none here so reaching out to the 2010's and above crowd..... Who has had it and what of the other 10 things listed as possibles did itended up being the culprit. Figure if I start where others have succeeded it should save me some time......lol.
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