The automobile dictionary meaning of this engine P2045 Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 0 is Fuel And Air Metering. 4 is BBV Sensor Circuit Low Voltage and 5 for Park or Neutral Position (PNP) Switch Circuit Engine Torque Signal Circuit. The engine P2045 code seems a kind of powertrain problem and this problem can solved as soon as possible and in this reason, you do not need to add or remove any component from the car engine. Allow an automobile engineer to check and solve the car engine.