konceppt

Hi all.

My 130 tdci is going into limp mode with fault code po1211.It's also periodically cutting out and bringing up po251

I have fitted a bosch filter and replaced all the leak off pipes as one had split so I thought maybe it was drawing in air. What's next? Fuel pump?

Not sure if this is related but I had the DMF replaced with an SMF and new clutch and slave cylinder recently and ever since its come back the car is making an odd whirring noise now which is more prominent in higher gears under load but is there all the time. Like a whirring/rattly noise. Any ideas? Could they have fitted something incorrectly? The car has been awful and noisy since that was done

Don't know if its coincidence but it also came back running really lumpy on start up and kicking white smoke out. Clears after a few seconds

I'm assuming that's a coincidence since the fault codes appear to point at fueling