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Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Engine Controls - Description & Operation (Except Diesel & Hybrid)) >> Powertrain Control Software >> Deceleration Fuel Shut Off (DFSO)

Deceleration Fuel Shut Off (DFSO)

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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, allows for increased rear heated oxygen sensor (HO2S) concern detection, and allows for misfire profile correction learning.

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