Land Rover Repair: Land Rover 2 codes, air intake hose, sophisticated test

Question
Hello John,
 My check engine light has been on for a few weeks and i plugged in my Car Md.I found the following codes:P0171,P01884,P0743,and P0174! I read here about people having similar codes dealing with P0171 and P0174. Check my Air intake hose and found that there was a piece that was slightly cracked!Couldn't find a replacement so I JB welded it closed! the piece I'm referring to looks like a debris catcher or something. It is attached to the part that leads out of the Air filter! The codes are still present! Any advice would be helpful! Thanks in advance!!

Answer
Some of your codes relate to the engine, some to the transmission and communications.  You can day a day's access to Land Rover's service database at www.landrovertechinfo.co but I am not sure how far you'll get.  Most of those codes will require you to do tests and make measurements with a T4 type factory test system.  I don't think you'll be able to get far resolving them with hand tools at home.

Sorry I don't have more to suggest, but I don't know how to attack that without more sophisticated test tools.