The real meaning of the C1512 Code necessary to know and real meaning of the code is found in the car engine manual but you will get the general meaning online and it is c for Chassis Code Problem is controller area network wiring bus and modules. 1 for MFG – Manufacturer Specific. 5 for Computer And Auxiliary Outputs. 1 for Low Coolant Circuit and 2 for A/C System High Pressure High Temperature. These are the general meaning of the code and do not follow the general meaning and it may lead to wrong problem. If you have experience of solving the car engine, you may try to solve the car engine.