You can learn something and get some information about the car engine from the car engine P2803 Code. It is very important thing for solving the car engine. The automobile dictionary meaning of the code gives general information for solving the car engine. If you know the real meaning, you must not use automobile dictionary mening. The automobile dictionary meaning may be appropriate for your car engine problem. The automobile dictionary meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 8 for Ignition System Or Misfire. 0 for IC Circuit High Voltage and 3 for Transmission Control Module Reprogrammable Memory.