Check Engine Light..EGR 401

I recently purchased a 2000 Camry and about 2 days after I had it the Check Engine Light came on. So I replaced the gas cap because the old one seemed very loose and reset the check engine light. Well the light came on again and I took the car to Auto Zone and they checked it and said it was a EGR 401 code...does anyone know if it is ok to drive the car with this problem and is this something I can fix myself......thanks so much in advance.

i drove mine for 4 months with my light on with code p0401. i think it will affect your gas mileage and mike your transmission shift a bit weird because the vacuum controls the transmission.i replaced the egr valve and egr modulator and the light came back. the VSV(vacuum switching valve) was the problem. i would suggest you to take it to the dealer and check it there, unless you want to waist a lot of time and money on uneeded parts like i did

p0401 (4 cylinder engine) exhaust gas recirculation flow insufficient. Possible causes in diagnostic order... EGR valve stuck closed, open or short in vsv circuit for egr, vacuum or egr hose disconnected, map sensor, vsv for egr open or close malfunction, ecm

i drove mine for 4 months with my light on with code p0401. i think it will affect your gas mileage and mike your transmission shift a bit weird because the vacuum controls the transmission.i replaced the egr valve and egr modulator and the light came back. the VSV(vacuum switching valve) was the problem. i would suggest you to take it to the dealer and check it there, unless you want to waist a lot of time and money on uneeded parts like i did



hi

do you or anyone have picture of the VSV(vacuum switching valve)

thanks.

i dont have any pics but i believe it is located under the intale manafold. i think you can follow the hoses from the egr valve to the vsv