B15 Sentra (2000 - 2006)
So my 02 sentra (96k miles) has scanner codes: P0037 H02S Heater Control Circuit Low Bank 1 Sensor 2, P0051 H02S Heater Control Circuit Low Bank 2 Sensor 1, and P0057 H02S Heater Control Circuit Low Bank 2 Sensor 2. It shows each of these codes TWICE on my scanner, not sure if that matters but...