The actual voltage depends on the type of sensor and the specific configuration of the vehicle's engine management system. Generally, oxygen sensors produce a voltage signal that varies between 0 and 1 volt, with a rich fuel mixture (i.e., high oxygen content in the exhaust) resulting in a higher voltage output, and a lean mixture (i.e., low oxygen content) resulting in a lower output voltage.
Note: The voltage signal of an oxygen sensor can vary significantly based on several factors, including sensor design, operating temperature, and the specific air-fuel ratio conditions. It's always recommended to refer to the vehicle's service manual or consult a qualified mechanic for precise information about the expected voltage values and diagnostic procedures specific to your 1993 Subaru Imprezza.
