'gascap' warning light is on; not corrected by replacing the gascap with a new one as suggested in the owner's manual. We used a device to clear the codes and it said there was still a slight leak . .
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2007 Chrysler Aspen Question: 'Check engine' light on.
Answer #1patrick mannion from Greg Solow's Engine Room, July 28, 2011, 22:51Master
The system will have to be properly diagnosed either using a scan tool with bidirectional controls that can open and shut evap solenoids or by using a "smoke machine" that puts inert non flammable smoke into the fuel system to look for leaks.