P1173 Buick Throttle Actuation Potentiometer Signal 2 Signal Too High
Possible causes
– Faulty Throttle Position Sensor (TPS)
– Faulty Throttle Position Sensor (TPS) harness is open or shorted
– Faulty Throttle Position Sensor (TPS) circuit poor electrical connection
– Faulty Throttle Drive electric motor
– Faulty Throttle Valve Control Module
– Faulty Throttle Position Sensor (TPS) harness is open or shorted
– Faulty Throttle Position Sensor (TPS) circuit poor electrical connection
– Faulty Throttle Drive electric motor
– Faulty Throttle Valve Control Module
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