P1141 Buick HO2S Heater Control Circuit Bank 1 Sensor 2

P1142 Buick HO2S12 Heater Circuit High

Possible causes
– Faulty HO2S12
– HO2S12 harness is open or shorted
– HO2S12 circuit poor electrical connection
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