The engine C1834 Code is found online and it is not necessary to follow the general meaning. You can know the automobile meaning but do not use it for solving the car engine problem. 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. 8 for Ignition System Or Misfire. 3 for Cruise Control Servo Indicates Low and 4 for Cruise Vehicle Speed/Set Speed Difference Too High. The C1834 engine code seems a sort of chassis problem and the chassis problem can be solved easily.