Jimmy not running well when hot

[Gavin]

My Jimmy has a problem when hot. Runs fine when cold but when it gets to temperature it starts to miss fire when its Reves up.
The engine light and I believe central locking flash and it backfires a bit. Won’t go above 1000 Reves.

[stimpy]

Have you plugged in an OBD reader? Other than a cursory glance round the bay that is where I would start mate....