The engine C1187 Code is associated with the car engine and this code appears for the problem of the Chassis problem. This problem of the engine can be solved with less effort and money but it is important to gain the real meaning of the code. The automobile meaning of the code is not important and it is not used for solution. 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. 1 for Transmission. 8 for Exhaust Gas Recirculation System Valve 1. 7 for Cruise Inhibit Control Circuit. The engine C1187 code resolves the synchronizer pin is unconfined using hydraulic pressure which is measured by a dedicated solenoid.