I have a x type Jaguar 2002 , an the light of the limp home mode went on . I have been driving around checking everything . No codes are coming Up The car only have 45 000 miles

SOURCE: Jaguar S type wont rev over 4500 revs

possible air mass meter

SOURCE: 04 Jag xj8 set brake code is on---limped home

When this happens, usually you have to replace the Computer. There is a chance you just didn't reset it when you took to cables off. Remove them and tape or hold them together for 5minutes or longer. If it still does it, I would get a book and find out where the code is to lead you. With the obd it only gives you a starting point in the diagnosics. You may have air in your lines that need bled, a sensor out, or just plain adjustment of the cables. But it shouldn't go into limp home mode unless you lost your Engine Control Monitor. Oh, I didn't click the read more button. Check the E-brake cables. You may have run over something that hooked it and ripped it loose. The Jags can tell if the cable is too far out of adjustment. It's under the car, cable should go through the floor and run to the rear of the car and Y out to the rear wheels. Good luck.

SOURCE: limp home mode light will come on and stuttering

Check the actual ohm readings for tps sensor to manufacturer specs. Sounds like the tps sensor is out of range. Sometimes the o2 sensor gives a false reading to the ecm which causes the tps malfunction. Doubt seriously if it electrical short. Bad ground maybe.