I have a 2007 magnum my speed me to run not working it won't get up in speed

My speedometer is not work n also it having a hard time accelerating...I went n got codes read u1110 u1120 u0121 can these codes have something to do with the accelerating

Ok, your ABS module is not sending vehicle speed information to the CAN. CAN means controller area network, and is extremely similar to how a home Internet router works. A CAN, which you have several, is a network to link all of the systems in a vehicle to allow them to share information. The inforation for the speedometer comes from the wheel speed sensors, through the ABS module, and into a CAN. The error may be that the ABS module is not receiving info from the wheel speed sensors, the ABS module is not sending info to the CAN, or the CAN is not able to accept info from the ABS module. You will want a professional technician to diagnose this issue with professional scanning equipment, or you may end up chasing wires all day with no fix, or more issues. If you have a multi-meter and a good understanding of electricity I can give you some direction, but diagnosing this thing over the Internet may be impossible.