MX-3.com

I recently had a check engine light blink a couple times while at idel, at a stop light. I did an engine diagnosis the code I got was 16. This Haynes tech book says its the Egr position sensor. What is the result of a bad sensor? are they expensive to replace? Is it a dealer part or can I get it at Napa auto? I have a 1993 GS V6 1.8L AT, any help on this matter would be appreciated...
dmanpaul@aol.com

It's part of the EGR valve, it tells the PCME what position the EGR valve is in, and you can't replace it without replacing the EGR valve.