You can't clear that code as the chip maker used the software from the P38 Range Rover (4.6) for the chip and you don't have the electronic gearbox, so you are stuck with the code.
Contact the chip manufacture, or if you just used RR 4.6 chips then you can't clear it (well you can clear it, but it will come back).
I do not check PMs. Call or email if you need something.
ECR is not a parts source. We are not in the mail order business.