P0790 Buick Normal/Performance Switch Circuit Malfunction

P0791 Buick Intermediate Shaft Speed Sensor A Circuit

Possible causes
– Faulty intermediate shaft speed sensor
– Intermediate shaft speed sensor harness is open or shorted
– Intermediate shaft speed sensor circuit poor electrical connection
What about the obd code?
P0791 Buick 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)
Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera