service eng light on 1998 Nissan Sentra

I have this light on in my dash, end i do diagnostic test, end the answer was: low flow detected, end 4 probable cause: EGR-passages blocked EGR-pintle stuck closed EGR-volume control valve open or shorted EGR-temperature sensor error. So; my cuestion is, how i know wich is the real cause of my service eng light.

by in Beaverton, OR on March 18, 2009
1 answer
ANSWER by on March 19, 2009
Sounds like the EGR passages are blocked and causing the check engine light to come on New EGR valve is $150 to $200 at the parts stores but its $107 at
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I do diasnostic test and the answer is low flow detected, have 4 probable cause; EGR passages bloked. EGR pintle stuck closed EGR volume control valve open or shorted EGR temperature sensor err...

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