Ok my check engine light has been on. When I check it out the computer gave me P0155 heater circuit ( Bank 2, Sensor 1) called dealership to find out what side the sensor is on and if it is front or back they told me to call autozone and they did not know. Can someone please help me.

Ok my check engine light has been on. When I check it out the computer gave me P0155 heater circuit ( Bank 2, Sensor 1) called dealership to find out what side the sensor is on and if it is front or back they told me to call autozone and they did not know. Can someone please help me.

Hi and welcome to the Forum. Please Post back with your make model year and engine size.

Bank 2 sensor 1 is located on the passenger side. It is the sensor that is closest to the exhaust manifold.

Bank 1 is the side with cylinder #1. Bank 2 is the opposite side of the engine, this is true on ALL V6 and V8 engines from all manufacturers, (industry standard).