The automobile meaning of the C1510 Code is not helpful if you have real meaning of the code. The automobile meaning of the code 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 0 for Transmission Engaged At High Throttle Angle. Do not follow the general meaning of the code for solving the car engine. You should try to follow the real meaning of the code. Otherwise, you may face more different problems of the cars. So, be careful.