The car engine C1841 Code has different meanings and you have to discover the correct meaning of the code what you will find from the car manufacturer. Do not follow online meaning of the code and it is called automobile dictionary meaning. The general or 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. 8 for Ignition System Or Misfire. 4 for BBV Sensor Circuit Low Voltage and 1 for TFP Valve Position Switch-Drive Without Drive Ratio. It is easy to fix the chassis problem.