My 2008 Civic no longer updates the fuel economy average guage. how do I test / fix it?

Asked by Jimmy Apr 06, 2015 at 11:39 PM about the 2008 Honda Civic EX-L

Question type: Maintenance & Repair

My car has the average fuel economy Guage. It is metric, so
it shows l/100km instead of mpg. But it shows 30. It does
not change. Ever. Even if I reset the trip odometer, the
l/100km remains the same.

1 Answer
143,785

T_S_T answered 9 years ago

Jimmy,you might take the positive battery cable loose and reset the Ecm,if this doe,s not work,you may have internal damage to the guage it self,

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