The following codes have come up on my vehicle(check engine light was on) .Would someone please tell me what they mean? Thanks!!
PO456,PO455,PO442
P0442--Evap Emission Sys. leak detected small leak
P0455--Evap Emission sys. leak detected gross leak
P0456--Evap Emission Sys. leak detected very small leak
My 2001 town and country mini vans check engine light won't go out. It was tested at auto zone for a gas cap problem. I bought a new gas cap and drove over 50 miles now and the light is still on.
You need to have a smoke test done to see exactly where the leak is. The cost should be aroung eighty dollars. I am sure the leak is in the fuel filler neck.
I had the same problem, tried the gas cap, didn't work. Have someone check your filler neck had a rust hole, that was my problem. I had a hard time finding one used and in good shape here in NS. It is very common around here.
So how did u fix it?
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Leak in evap, most of time the gas cap was not put back on.
SOURCE: 2001 Dodge Caravan/check engine light
Is your gas cap tight? check it, these codes indicate a large leak in the fuel evaporative emission recovery system at the gas tank
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Thanks, Bob L.
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