How To Test and Replace Air Fuel Sensor P0153 P0154 P0155 | Bank 2 Sensor 1

How to test and replace an air fuel ratio sensor, or a/f sensor. This specific sensor is bank 2 sensor 1. (Driver's side before the catalytic converter.) These are commonly called oxygen sensors as well. The a/f sensor operates over a wide air / fuel range. The a/f sensor is installed upstream (before) to the catalytic converter and sends signals to the vehicle's computer; which varies the duration of fuel injection accordingly.

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This specific vehicle is a 2006 Acura TL and deals with bank 2, sensor 1:
Bank 2 - Driver's side of engine
Sensor 1 - Before the catalytic converter (or upstream)
It's best to check with your vehicle's repair manual for specific testing parameters.

P0153 - Front Air Fuel Ratio Sensor Bank 2, Sensor 1 Circuit Slow Response
P0154 - Front Air Fuel Ratio Sensor Bank 2, Sensor 1 Heater System Malfunction
P0155 - Front Air Fuel Ratio Sensor Bank 2, Sensor 1 Heater Circuit Malfunction

Note:
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