Need help with Error P0154 - Rear Oxygen sensor - Big Problem?!
Yesterday I installed a new Joker Machine A/C and the XiED's.
When I wanted to check for errors, to see if they are working properly, I saw the error P0154 (only one) which means (after some research) Open/Inactive Rear Oxygen Sensor.
I removed the XiED in between and still got the error.
Important fact. I saw that i'm missing the little-black-plastic-end-plug of the sensor. Looks like this at the moment (picture is not mine):

A called a friend and he told me he lost it while installing new pipes... I can still plug it in tho.
Any sollutions please? Do I need a new sensor?
PS: I guess I've been riding with that error the last few weeks.
I would just replace it, that connector should be watertight or you could have issues in the rain.



