Check engine light on 2000 Mercedes-Benz S430

My check engine light came on. How can i check what is wrong or what does it mean? The light is still on and it came on about 3:30p.m. mst 03/21/2010

by in Aurora, CO on March 22, 2010
1 answer 1 comment
ANSWER by , March 22, 2010
You just need a code reader plugged into your car. Go to a parts store and ask them to run a scan on your car and then they can tell u what it says.
COMMENT by , July 24, 2010
most likely a sensor. It usually is an O2 sensor. Check fluids to be safe, then run the code when you can.