The C1211 Code plays vital role for solving the car engine problem. The automobile engine code reader shows the code on the screen. Do not use the false meaning of the code for solving the engine. 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. 2 for Accelerator Pedal Position (APP) Sensor. 1 for Performance one Low Coolant Circuit. 1 for TFP Valve Position Switch-Drive Without Drive Ratio. The C1211 engine code seems a type of chassis problem. It can be fixed easily.