Gas Leak Detection System What Else Could Be Causing The Check Engine Light To Come On? My Car Has 126,000 Miles On It.?

What else could be causing the Check Engine light to come on? My car has 126,000 miles on it.? - gas leak detection system

I have a 1997 Plymouth Breeze, 2.0 engine with four cylinders. The "light" came last week and took the car directly to AutoZone for a system analysis OBD2. The only code that is saved P1494, I called the dealer and Chrysler said it was a leak in the EVAP system. It is the most likely cause was a cap is loose or missing. I looked for him, and was even at the cost of buying a new one. Under the new CAP has been installed, I had deleted the code. I reset the counter and went back about 90 miles and the light. I had a command-line mechanical and piping from the fuel tank of the coal ship, and the engine. All were tight and in good shape. I was also the dealer that the pump leak may be poorly informed. This is a small Vacum pump, which maintains a constant Vacum evap. My Haynes manual shows this pump, but my mechanic said, no one in my car. It tells me now that's my problem ?????? O2 Sensor