Check Engine Light Due to Plugged EGR Passage on Ford Contour

Problem Description and Possible Solution

The Check Engine Light can illuminate with codes due to the lack of EGR (exhaust gas recirculation) flow caused. This is commonly a result of a clogged passage in the intake manifold. To correct this problem, the EGR valve has to be removed and the passage cleaned thoroughly. Partial restriction of this passage can cause smog test failures for the NOx emissions without causing a drivability symptom.

Problem Data
RepairPal Verified
Average mileage: 120,816 (60,000–205,000)
Exhaust & Emissions affected: 2.5L V6
6 model years affected: 1995, 1996, 1997, 1998, more1999, 2000
18 people reported this problem
Viewing 1 - 4 of 4 comments
Check engine light came on and needed to replace oxygen sensor and vacuum solenoid/EGR valve solenoid.
still going on.
codes 420 and 430 cleaned and replaced o2 and fine for awhile then it starts all over again.This is a constant problem and I am tired of.
have not repaired 3 months until inspection
How do you get the check engine light to go out after EGR was cleaned and replaced?