A fault condition characterized by {HEAD ~ the sensor} operating outside the current limiting range of operation in which sensor output current indicates the concentration of oxygen in the engine exhaust gas is diagnosed when {TAIL ~ a significant signal content} is detected at the fixed frequency 
A fault condition characterized by { HEAD ~ the sensor } operating outside the current limiting range of operation in which sensor output current indicates the concentration of oxygen in the engine exhaust gas is diagnosed when { TAIL ~ a significant signal content } is detected at the fixed frequency
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH