The engine C1098 Code has many meanings and it is necessary thing for solving the car engine. Do not drive the car if you do not fixed the car engine. The code has general meaning and the general meaning of the code is not very helpful. The dictionary meaning of the code is easily found online and for that you do not need to work hard. The dictionary meaning of the code is C for Chassis Code Problem is controller area network wiring bus and modules. 1 for MFG – Manufacturer Specific. 0 for Fuel And Air Metering. 9 for Crankshaft Position Sensor Circuit Performance and 8 for PCM Stack Overrun.