i have an issue with our family car. I have decided to try and diagnose this my self. 2011 Mercedes E220 cdi. Fault code P215011 “The power supply of injector group “B” has a short circuit to ground. I have found the damage to the wires leading to injector 3 & 4 as seen in the pictures. My question is, could this be the problem? Any help or advise would be much appreciated.