distance to empty displays CO what is this?
CO = Circuit Open There's either a wiring problem or your fuel sender has a bad spot in it. Most likely the latter.
Where is the fuel sensor located?
Low fuel. Sending unit is unable to register remaining fuel in tank. Fix: Add sufficient amount of fuel. Next if that fails, check to see if you have fuel @ fuel rails, check voltage @ fuel pump,sending unit and of course any applicable fuses. This should set you off in the right direction. Process of elimination.......and DON'T give up !!!!
CO literally means "Circuit Open". Like I said before
In relation to fuel it could also mean can't oscillate
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