check engine light on 2005 Toyota Sienna

I just pulled out of my toyota dealers parking lot after having the oil changed and the check engine light is on along with the VSC light. Whats up?

1 answer
the check engine light is a fuel control issue. nothing to do with the oil change but maybe they bumped something that caused the light to come on. i have replaced air filters in toyotas and knocked off the evap soloniod wires which cause the light to go on

Roy