The engine P2254 Code is fully meaningful and you need to collect the meaning of the code for solving the car engine. The real meaning of the code is important thing and you must not use wrong meaning for solving the car engine what may make terrible problem in the car engine. The automobile dictionary meaning of the code is not wrong meaning of the code and it is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 2 for Accelerator Pedal Position (APP) Sensor 1 Performance. 5 for TP Sensor Learn Not Complete and 4 for Cruise Vehicle Speed/Set Speed Difference Too High.