The chassis of the car engine is problematic and the engine C1703 Code has become visible on the engine code reader for the car engine problem. Getting the real meaning of the code is not found online and do not follow the general meaning of the code for solving the car engine problem. The general meaning of the code is normal information only. The engine C1703 is the major thing to check is to verify the process of the VCT solenoid. You are looking for a stabbing or stuck VCt solenoid valve produced by adulteration. Refer to car specific repair manual to achieve section tests for the VCT unit.