2015 Mazda6 Skyactiv Diesel Fault Code P2150...Help

[aj84]

Hi group I've got a mazda skyactiv-d 2015. My car half way through a dpf regen cut out because i put my foot down and it cut out. When I started it again it would cut out, so I got injector 4 reconditioned and the car stays on now but it sounds rough, fault code p2150 now, fuel injector group b supply voltage low, can anyone help me?