Will the ECU throw any code if i've mix up with the Primary and Secondary O2 sensors wire on 1st gen B16?

 

Can soemone tell me what colour to which sensors, Please?
There're white and orange. While fitting the sensors and chat with friend after that i forgot which wire to which sensors!!!

 

OK, the orange wire is for the secondary O2 sensor, white is primary. I do not have -personal- experiance with it but from what i heard, having them reversed will create a lean condition in 2 of your cylinders (cant remember which 2). Hope this helps.
Good luck

 

Thanks for that! but i'm not sure which is primary sensor? Assume i standing in front of the engine, it is the one on left or right of the mainfold?

 

The innermost sensor is the secondary.