Question

What does P1147 Bank 1 Sensor Rich Shift Monitoring mean on a 2005 Nissan Frontier?

Answer 1

The engine code P1147 indicates a malfunction with the Heated Oxygen Sensor 2, also referred to as the Rear O2 Sensor or Downstream Sensor. Replacement of the sensor is necessary to resolve the issue. You can read more about it on the code page:

P1147 Nissan Code - Heated Oxygen Sensor 2 Maximum Voltage Monitoring Bank 1
Read more: https://www.autocodes.com/p1147_nissan.html