How do I go about replacing the sensor for code P0150?
02 sensor circuit bank 2 sensor 1
Bank 1 refers to the side of the engine that has the #1 cylinder. Bank 2 is the opposite side of the engine.
To clarify more, bank 1 is the left cylinder row, seen from the drivers seat, consequently bank 2 is the right cylinder row, seen from the drivers seat.
Sensor 1 is the upstream sensor, ie the one closest to the engine exhaust manifold, and sensor 2 is the downstream sensor.
So in your case the bank 2 sensor closest to the exhaust manifold is the problem. Have a look at the wiring first, sometimes a connector could get loose or have a bad contact due to corrosion or dirt or a wire shaved through or is touching an exhaust part, which could have melted the wire insulation.
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