The automobile meaning of the engine P284E Code is not very helpful and it is not used for solving the car engine but you can read the manual of the car engine for solving the car engine. The powertrain problem can be fixed fast and easily. However, the automobile meaning of the engine code is P for OBD-II Diagnostic Powertrain (P) Trouble Code For Engine. 2 for Fuel And Air Metering (Injector Circuit Malfunctions Only). 8 for Engine Oil Temperature Sensor Malfunction. 4 for Cylinder 10 Contribution or balance Fault and E for Exhaust Gas Recirculation Sensor B Circuit High.