The engine C1127 Code is linked with the automobile engine and it is important to start fixing the problem from the chassis . The code appears on the car engine reader when the engine is testing and failed by the engine code reader to read. The general or dictionary meaning of the code is found online and that is C for Chassis Code Problem is controller area network wiring bus and modules. 1 for MFG – Manufacturer Specific. 1 for Transmission. 2 for Air Conditioning (A/C) Clutch Feedback Circuit High Voltage and 7 for Cruise Inhibit Control Circuit. Do not drive the car with engine fault.