Possible causes
– Faulty Input Shaft Speed Sensor
– Input Shaft Speed Sensor harness is open or shorted
– Input Shaft Speed Sensor circuit poor electrical connection
– Input Shaft Speed Sensor harness is open or shorted
– Input Shaft Speed Sensor circuit poor electrical connection
When is the code detected?
P0791 code is detected when the input speed sensor voltage is more than 1.9V or less than 0.1V for 2 seconds or more
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)