replaced bank 1 sensor 2 and plug from ECM that plugs to o2 sensor but still getting code p0139

Question

• List item any other ideas what could be causing this

Answer 1

P0139 slow response bank 1 sensor 2, A cross connection of the front and rear bank. A exhaust manifold leak, a plugged PCV or even a collapse PCV hose, Fuel pressure being low  the specification are 338 kPA - 348 kPA