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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 2605 (Engine Controls - Description & Operation (Hybrid)) >> Powertrain Control Software >> Deceleration Fuel Shut-Off (DFSO)

Deceleration Fuel Shut-Off (DFSO)

WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, 2011 Ford Fusion, 2010 Mercury Milan, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

During a DFSO event the PCM disables the fuel injectors. A DFSO event occurs during closed-throttle deceleration; similar to exiting a freeway. This strategy improves fuel economy and allows for increased rear heated oxygen sensor (HO2S) concern detection.

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