2011 Ford F150 Ecoboost with engine code P0151. Location of sensor and test procedures?

Question

Code P0151 low voltage (bank 2, sensor 1)
2011 Ford F150 Ecoboost with engine code P0151. Location of sensor and test procedures?

Answer 1

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Here is the engine cylinder identification, where 1,2,3 cylinders are this is Bank 1 the reason Bank 1 is always where cylinder 1 is located, the other side now becomes Bank 2, anything attached to that side of the Bank belongs to that side of the Bank. Sensor 1 are upstream 02 sensor theses are before the catalytic they are engine monitor sensor, sensor 2 are downstream they are catalytic monitor sensor which is after the catalytic and some are on the catalytic convertor. When it comes to diagnosing a P0151 this is considered a open circuit or a disconnection of the 02 sensor. if the connection is truly connected, it is important you check for other "P" codes that can be set, you run a KOER (key on engine running) test, other code such as a MAF (mass airflow) a misfire condition when a P0151 is set it basically a disconnected 02 sensor, or an open circuit of the 02 sensors.