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Help w/ P0051 Code (Bank 2 Sensors Already Replaced) Hi there, Similar to this issue, I have been struggling to fix a P0051 code on my 2005 SR5 (V6 / 4.0L). I recently failed emissions for high NOx, with the check engine light also being on. I have replaced both Bank 2 sensors (Sensor 1...

Help w/ P0051 Code (4th Gen - O2 Sensors Already Replaced) Hi there, Similar to this issue, I have been struggling to fix a P0051 code on my 2005 SR5 (V6 / 4.0L). I recently failed emissions for high NOx, with the check engine light also being on. I have replaced both Bank 2 sensors (Sensor...