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I replaced both secondary 02 sensors (with Nissan Sensors) on my 2002 Maxima after getting codes P0139 and P1147 per service bulletin
TSB02-051A.
The P0139 and P1147 codes cleared and did not return.
However I now have codes P0037 and P0057.
The service bulletin says to visit dealership for secondary 02 sensor replacement and ECM re-programming.
I was under the impression the sensing-circuit voltage-limits were widened. If that's the case, I doubt the re-programming would help.
Does anyone know exactly what gets re-programmed?

Thx!




P1147 - Heated Oxygen Sensor 2 Maximum Voltage Monitoring (Bank 1)
P0139 - Heated Oxygen Sensor 2 Circuit Slow Response (Bank 1)
P0037 - Heated Oxygen Sensor 2 Heater Low Voltage (Bank 1)
P0057 - Heated Oxygen Sensor 2 Heater High Voltage (Bank 1)