Hi, I have owned my Discovery 3 for about 12 months and, since purchasing it, have been having the same issues. About 3 to 4 times a month, when I start it, the engine runs but the tachometer stays at zero, the transmission goes into limp mode and when I scan it for codes, I get a steering angle sensor fault. I turn the engine off and restart and everything is fine apart from the cel on, until next time.
Any thoughts?

Hello and welcome to LZ
Best to ask tech questions over in the disco section of the forum https://www.landyzone.co.uk/forum/land-rover-discovery.8/
have you checked the battery voltage as low volts will throw a fault up on start up.

Thank you for your reply. Yes, I have had the battery load tested and it is OK. The problem can occur anytime. I can start it up and drive for a while, turn it off while I go into a shop, for example, restart the car and the fault occurs. Other times, I can go for a whole month with no fault.