The meaningful engine C1898 Code is important thing and the right meaning of the code is necessary. Do not use the automobile meaning of the engine code. The automobile meaning of the engine 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. 9 for Crankshaft Position Sensor Circuit Performance and 8 for PCM Stack Overrun. The regulators of each cylinder are closed by a pair of arms that swap the conformist engine’s roller-type rocker arm. The engine C1898 code is one of these arms which follows the cam profile while the2nd arm connects to the valves.