Possible causes – Air/Fuel Ratio Sensor 1 harness is open or shorted– Air/Fuel Ratio Sensor 1 circuit poor electrical connection– Faulty Air/Fuel Ratio Sensor 1 Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1165 ACURA OBD Code Description The Air/Fuel Ratio (A/F) sensor 1 is installed in the exhaust system and detects…