A method for controlling a valve for directing an exhaust gas stream through an exhaust duct having an aftertreatment device and a bypass duct in an exhaust system of a vehicle is provided. The methodincludes receiving first sensor signals from a first sensor coupled downstream from the exhaust after treatment device, and processing the first sensor signals to determine a first temperature of anoutlet exhaust gas stream. The method includes determining a bypass command based on whether the first temperature exceeds a first pre-defined threshold for the outlet exhaust gas stream. The method also includes outputting a control signal based on the determining of the bypass command to a valve coupled to the bypass duct and the exhaust pipe upstream of the aftertreatment device to move the valve between a first state and a second state.