Navistar, Inc. (Navistar) is recalling certain model year 2011-2014 International DuraStar Trucks and 2012-2014 International TerraStar trucks intended for emergency vehicle operations manufactured from February 25, 2010, through February 18, 2013, and equipped with 2010 MaxxForce 7 V8 diesel engines. In the affected vehicles, the Engine Warning Protection Shutdown (EWPS) was inadvertently re-enabled when the Engine Control Module (ECM) was recalibrated.