I just got a 2006 V70 petrol engine automatic.

it came with some issues including some error codes and the message "motorprestanda nedsatt" (engine performance reduced). The fault codes were:
ECM-216D Long term fuel trim, bank 1, signal too low
ECM-1210 Mass air flow (MAF) sensor. Flow too high
ECM-640C Turbocharger (TC) Control System, Signal too high

I deleted the fault codes and I think that was a huge mistake...

Now the engine will not start. Ignition goes off but it doesnt seem to get enough throttle and dies. Doesnt help to press gas pedal.

I feel like an idiot! On top of this I really really need the car this week.

can anyone please offer any advise?

 

Update that might be useful for others getting same issue in future:

Disconnecting the MAF solved it temporarily. Disconnected and it started fine again. Turned off Connected the wires back to the MAF. And then it also started fine again.

Considering this a temp fix, hope the proper fix wont be too expensive...