Two days ago whilst driving the engine lost power and started to judder/ limp mode and showed error code ‘ABS service needed’.Breakdown cover diagnosed cylinder 2 fuel injector was at fault. This fuel injector was replaced, but driving onward still felt juddery but no fault light.
The next morning driving ten minutes down the road the engine was shaky and blowing a lot of smoke out the exhaust.
a garage plugged it in to a diagnostic machine and it showed a communication error code. The EGR was unplugged . This was plugged back in and diagnostic repeated. It showed no error code but the engine was shaking and still pumping out a lot of Un burnt fuel / smoke out of the exhaust .

 

what year/engine is your car?

 

Volvo C30 2011