got a p1135 code and changed the bank 1 sensor 1 and it lasted 20 miles till

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ck light came on again. then got p0174 and p1150. cleaned filter box and changed air filter and went 200 miles. light came on again and I get p110 bank 2 sensor 1. suspect I need to change it, does soaking in alchol clean the sensor or should I just buy another one.