New owner from Wiltshire, limp issue

[Steveo]

Hi,

I'm Steve-o, I've got a Largo Grand star from Wiltshire

Having an issue with the engine check light when upto temperature (fine before temp) and then going into limp mode.
Putting it into neutral and revving it clears the light and then drives normally no probs for the rest of the trip

We've tried following the link for the engine code reading, but it says we're not authorised to read it?

Any help appreciated,
Thanks

[jimmyrev3]

go to hints and tips section ecu procedures and codes cd20t tells you how to do it yourself

[N.r.g]

You'll be able to read it now.