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Q: CHECK ENGINE LIGHT STAYS ON IN MY 2005 T&C VAN on 2005 Chrysler Town & Country

Had major tune up a month ago.
Replaced Oxygen sensors, plugs,and cables. Since that time I have seen the check engine light come on and yesterday it has jsut stayed on all the tiem.
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Take to your local Autozone and they can check light for free. Could be as simple as loose or defective fuel cap. They'll give you good idea where to start.
I am experiencing similar on my 2003. Scan says it is a fuel vapor leak. I replaced gas cap...light came back on. Found a vapor line (hose)disconected, reinstalled it...light is back on again. The light comes on (has done this for 8 times in a row), when the fuel guage gets down to 1/2 tank. It is on now. Any suggestions?

Also, my brother has a 2012 T & C. His light was coming on. I found in the owner's manual instructions to not try to "pack" fuel into the tank. When the pump shuts off...quit pumping. He tried it, and in about 50 miles, his light turned itself off. OM will tell you why to not keep pumping.
Maybe problem with your fuel tank pressure sensor. Whenever the pressure drops below a particular psi- computer puts light up recognizing maybe leak in evap emissions.

As far as your brothers van- The pump is at bottom of tank, continually submerged in fuel. The fuel pump module is built around pump so keeps fuel around pump at all times even when fuel goes below pump. Unless problem with pump should not be effected with more fuel in tank. OM suggests not overfilling so not to effect fuel pressure sensor and fuel pressure regulator on some models. Fuel will also eat away at fuel hose between filler neck and tank and the fuel tank seal.

Hope this helps you!
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