Fuel Economy Panel

[sykm338]

While driving yesterday I went to bring my fel economy panel iat way nstead of saying "Fuel Economy" it said "Economy Carb" it stayed that why for about 65 miles and then switch to reading "Fuel Economy". No one has been able to tell me any thing about. 2010 3500 6. 7 Cummins, with 23381 Miles. Can any one help me.

 

[GoodmanS]

Do you think it was doing a regen?