A system, comprising: a gas turbine system, comprising: a turbine combustion system comprising a plurality of turbine combustors each configured to combust a fuel/oxidant mixture to produce combustion products; a turbine driven by the combustion products produced by the turbine combustion system; a plurality of sensors positioned downstream of the turbine combustion system and configured to monitor one or more parameters of the combustion products wherein the sensors are positioned at various points along an axial length of the turbine; a control system comprising one or more non-transitory machine-readable media collectively storing one or more sets of instructions executable by a processor to perform a turbine combustion system diagnostic routine comprising: adjusting an operational parameter of a first turbine combustor of the plurality of turbine combustors to cause a change in the combustion products produced by the first turbine combustor; identifying respective sensor responses of one or more first sensors of the plurality of sensors that detects the change in the combustion products; correlating the respective sensor responses with the first turbine combustor; and diagnosing a condition of the one or more first sensors, the first turbine combustor, or a combination thereof, based on the respective sensor responses. a turbine combustion system comprising a plurality of turbine combustors each configured to combust a fuel/oxidant mixture to produce combustion products; a turbine driven by the combustion products produced by the turbine combustion system; a plurality of sensors positioned downstream of the turbine combustion system and configured to monitor one or more parameters of the combustion products wherein the sensors are positioned at various points along an axial length of the turbine; a control system comprising one or more non-transitory machine-readable media collectively storing one or more sets of instructions executable by a processor to perform a turbine combustion system diagnostic routine comprising: adjusting an operational parameter of a first turbine combustor of the plurality of turbine combustors to cause a change in the combustion products produced by the first turbine combustor; identifying respective sensor responses of one or more first sensors of the plurality of sensors that detects the change in the combustion products; correlating the respective sensor responses with the first turbine combustor; and diagnosing a condition of the one or more first sensors, the first turbine combustor, or a combination thereof, based on the respective sensor responses. adjusting an operational parameter of a first turbine combustor of the plurality of turbine combustors to cause a change in the combustion products produced by the first turbine combustor; identifying respective sensor responses of one or more first sensors of the plurality of sensors that detects the change in the combustion products; correlating the respective sensor responses with the first turbine combustor; and diagnosing a condition of the one or more first sensors, the first turbine combustor, or a combination thereof, based on the respective sensor responses.