A method of operating a heating, ventilation, and air conditioning, HVAC, system, the method comprising: compressing, using a compressor, a refrigerant flowing through the HVAC system; receiving, at a condenser, the compressed refrigerant and allowing heat to transfer from a first flow of air to the compressed refrigerant; receiving, at an evaporator, the heated refrigerant and allowing heat to transfer from the heated refrigerant to a second flow of air; determining, based on an operational history of the compressor of the HVAC system, that pre-requisite criteria are satisfied for entering a sensor validation mode, the prerequisite criteria comprising a requirement that the compressor has been inactive for at least a minimum time; in response to determining the pre-requisite criteria are satisfied, determining an initial sensor measurement value, based on a signal from a sensor (114a, 118a, 132a, 136a) of a first compressor circuit of the HVAC system; following determining the initial sensor measurement value, operating the compressor according to a sensor-validation mode, wherein operating according to the sensor-validation mode comprises: operating the compressor at a maximum recommended capacity; and closing dampers of an economizer of the HVAC system such that outdoor air is not included in the second flow of air across the evaporator; following operating the compressor according to the sensor-validation mode for at least a minimum time, determining a current sensor measurement value; determining whether validation criteria are satisfied for the current sensor value, based on a comparison of the current sensor measurement value to the initial sensor measurement value; in response to determining that the validation criteria are satisfied, determining that the sensor (114a, 118a, 132a, 136a) is validated; and in response to determining that the validation criteria are not satisfied, determining that the sensor (114a, 118a, 132a, 136a) failed validation. compressing, using a compressor, a refrigerant flowing through the HVAC system; receiving, at a condenser, the compressed refrigerant and allowing heat to transfer from a first flow of air to the compressed refrigerant; receiving, at an evaporator, the heated refrigerant and allowing heat to transfer from the heated refrigerant to a second flow of air; determining, based on an operational history of the compressor of the HVAC system, that pre-requisite criteria are satisfied for entering a sensor validation mode, the prerequisite criteria comprising a requirement that the compressor has been inactive for at least a minimum time; in response to determining the pre-requisite criteria are satisfied, determining an initial sensor measurement value, based on a signal from a sensor (114a, 118a, 132a, 136a) of a first compressor circuit of the HVAC system; following determining the initial sensor measurement value, operating the compressor according to a sensor-validation mode, wherein operating according to the sensor-validation mode comprises: operating the compressor at a maximum recommended capacity; and closing dampers of an economizer of the HVAC system such that outdoor air is not included in the second flow of air across the evaporator; following operating the compressor according to the sensor-validation mode for at least a minimum time, determining a current sensor measurement value; determining whether validation criteria are satisfied for the current sensor value, based on a comparison of the current sensor measurement value to the initial sensor measurement value; in response to determining that the validation criteria are satisfied, determining that the sensor (114a, 118a, 132a, 136a) is validated; and in response to determining that the validation criteria are not satisfied, determining that the sensor (114a, 118a, 132a, 136a) failed validation. operating the compressor at a maximum recommended capacity; and closing dampers of an economizer of the HVAC system such that outdoor air is not included in the second flow of air across the evaporator; following operating the compressor according to the sensor-validation mode for at least a minimum time, determining a current sensor measurement value; determining whether validation criteria are satisfied for the current sensor value, based on a comparison of the current sensor measurement value to the initial sensor measurement value; in response to determining that the validation criteria are satisfied, determining that the sensor (114a, 118a, 132a, 136a) is validated; and in response to determining that the validation criteria are not satisfied, determining that the sensor (114a, 118a, 132a, 136a) failed validation.