Originally Posted by Kelvin
Thanks Jack, not sure if I could put up with the light being on all the time.
No I cant run with light on either because I would be concerned it would mask other problems.
Ive got resistor mod in place of EGR and my car runs much much better.
MIL light comes on after about 5 "Warm up from cold" so because I don't use my car much I just reset the Mil when it comes on and then wait for it to re-appear again (Dont know how practical this is for you, it depends how you use the car.
Ive found the error code, (P0401 EGR insufficient flow) that lights the Mil is activated during a warm up cycle when the Water Temp reaches about a quarter way up the temperature dial.