P0044 Buick HO2S Heater Control Circuit High Bank 1 Sensor 3

P0045 Buick Turbocharger Boost Control Solenoid Control Circuit

Possible causes
– Faulty turbocharger nozzle control actuator
– Turbocharger boost control solenoid control harness is open or shorted
– Turbocharger boost control solenoid control circuit poor electrical connection
– Charging system malfunction
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