The general or automobile dictionary meaning of the engine P1735 Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 1 for MFG – Manufacturer Specific. 7 for Auxiliary Emission Controls. 3 for Cruise Control Servo Indicates Low and 5 for Park or Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit. With the car engine problem, you cannot drive the car engine and solving the car engine problem, you must depend on the real meaning of the code. Solve the car engine problem by an expert automobile engineer. Otherwise, the problem may not fixed early.