Hello,

I experienced a powerloss and engine failure the other day. The fault code i found was P0191-20 fuel rail pressure plausibility - regulator deviation. After a while the engine started again and i barely made it to a petrol station. I filled the tank fully and have not had a failure since.

I suspect a faluty fuel pump. The tank read 1/4 when this happened.
I have for a while now noticed a variation in idle rpm. And noticed that it is pulsating.

Am i right to assume a faulty fuel pump? Or is it something else?