Join Date: Feb 2011
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6.7 DEF Codes and what the problem actually is
The manufacturer of the DEF pump has a problem with the sensors in the DEF pump. All of us might "discover" this problem either by now or by the end of February. The DEF pump is supplying the exhaust catalyst with the correct amount of fluid, the fluid is probably the right mix, etc. The sensor inside the DEF pump is defective. Ford has pulled all DEF pumps from its supplies. The manufacturer is presently building new DEF pumps with better sensors - and these new pumps should start delivery to Ford around the end of February.
So, if you are getting these DEF codes, you have the DEF pump bad sensor problem. You get to see the "Engine Light" for the rest of the month. Yup, I can see "Recall" written all over this one.