Engine Light On, Power Down, Catalytic Converter Message,etc

[Fiery Phoenix]

I was driving on the motorway doing 70mph when the yellow engine light flashed on.

Then I felt the power go from my car and the speed dropped, even if I had my pedal pushed to the floor it was struggling to go over 50mph.

When I was appraching a slow down at lights or a queue it felt like it was going to stall.

I managed to make it home and when I parked up the rev counter was moving up and down even though it was in neutral.

I tried it the next day and the Catalytic Converter error message came up on my dash and I am still experiencing the same problems.

It had 65,000 on the clock.

On advise please? Big repair job? Expensive?

[GrandadMonkey]

Sounds as if the fault has caused it to go into limp home mode. Probably a coil pack fault. Expensive guess if it is not that though.

I guess it is not overdue for a service. Oil and filters all ok.

Maybe a diagnostic test would help.