2008 MB E320 EGR valve removal pt. 1

Update: Dealer diagnostic test said Air Mass flow was too small. I ended up replacing the EGR with a new one, cleaned the Mass Air Flow sensor, replaced Camshaft Position Sensor. Problem resolved itself thereafter.

Description: Removal and cleaning of egr valve from 2008 Mercedes E320 at 71,000 miles. I have been getting an intermittent check engine light. Throwing code p0402 (egr valve - excessive flow)

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