The car engine C1403 Code is important thing for solving the car engine problem and getting the real meaning is necessary thing. The general meaning of the code is not necessary to use but you can learn some information about the engine problem. The general meaning of the code is C for Chassis Code Problem is controller area network wiring bus and modules. 1 for MFG – Manufacturer Specific. 4 for Transmission. 0 for IC Circuit High Voltage and 3 for Transmission Control Module Reprogrammable Memory. You need to recover the real meaning of the code and it is linked with the car manufacturer.