code P0402 excessive exhaust flow? | Ford Explorer Forums - Serious Explorations

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code P0402 excessive exhaust flow?

wildstang

Active Member
Joined
June 6, 2003
Messages
60
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0
City, State
Orange, Vermont
Year, Model & Trim Level
91 and 96 explorers
The mechanic said the problem was the DPFE but the 96 v8 does not have one so I replaced the egr and the sensor that bolts to it and the check engine light came back on. I borrowed a scanner and the code is P0402 exhaust gas recirculation flow excessive detected, then it has four ovals that are flashing which are cat, o2s, htr, eva and up in the corner it says pending code 02.

So any gueses what else or how to check.
 






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