When the car engine reader gets the engine C1241 Code on the test, it means that car engine has the problem. It is necessary to solve the car engine problem and for this reason, a real meaning of the code is necessary to know. The automobile dictionary 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 Performance. 4 for BBV Sensor Circuit Low Voltage and 1 for TFP Valve Position Switch-Drive Without Drive Ratio. Chassis of the car engine has the problem.