1997 range rover hse 4.6 Codes

I have recently had my range rover scanned on a computer and i gave me 3 codes 1120-1121 and p 1775 i believe the first 2 code are fuel positioning but the 3rd code is a transmission code does anyone have any information on that code.

Transmission is down shifting on its own.

RangeRovers.net • View topic - Diagnostic Trouble Codes - Land Rover GEMS p38 1994-1999

This list covers the GEMS model you have.

Thanks i do appreciate that information after reviewing that code do you know if the communication breakdown would be coming from the module on the side of the transmission
or would it be something internal

The codes which start with a '1' (eg P1771) relate to manufacturer specific codes, so if you have read the codes using a generic code reader, there is a chance it could be misleading. If you can get the vehicle put onto Testbook, you would get a more specific clue as to the issue.

The MAF has a lot to do with the autobox shift, and the presence of the first codes may be causing the third as a side-effect. I'd clear the codes, disconnect the MAF and see if the problem continues. A long-shot, but worth a try anyway, otherwise it needs Testbook.