So right hand would be from the drivers seat.
On your truck (if it has California Emissions) you have a total of four O2 sensors.
As PRP stated Bank one is always where number one cylinder is. That can be different depending on the make year model and engine in a vehicle.
Now if you have a Federal emissions system (depends on where the truck was originally bought) The above still applies but you would only have two sensors.
They are still S1 and S2.
Now if I understand your response above you were facing the engine and replaced Bank 2 Sensor 1.
Hope this helps.
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Saturday, May 8th, 2021 AT 12:32 PM
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