Pressure selanode problem

Hi everyone
I'm Ian live in Sheffield have a 2005 discovery 3 2.7
I had a leak from the transfer box pressure selanode so I swapped it out not knowing the correct procedure... Now I have the orange hi / low range flashing and the green low range flashing on the dash..
Could I please get your guys help as b4 I tried to swap this over I had no problems at all etc

Thanks.... Ian

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