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Brad B
Brad B, Ford Technician
Category: Ford
Satisfied Customers: 1091
Experience:  ASE Master Certified & ASE G1. Ford Senior Master
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I ran out of def and i filled it but the truck wont go more

Customer Question

I ran out of def and i filled it but the truck wont go more than 40 km/hr. How to reset
Submitted: 1 year ago.
Category: Ford
Expert:  Brad B replied 1 year ago.

Hello;

Thanks for choosing Just Answer! If you have ran the truck out of DEF and the reduced power message has been set, you will need to refill the tank to full. The level sensors will reset the system and allow full power to be restored, it may take a moment for the sensors to register if the tank has been drained to empty. Also make sure the key is off when the tank is being filled or the computer may not register the refilling of the tank.