Do not use any wrong meaning of the engine P0389 Code for fixing the car engine problem. Do not drive the car unless the car engine is fixed and do not try to solve the car engine by yourself if you are unable to solve the car engine problem. The automobile dictionary meaning of the code does not let you helps for solving the car engine problem. The automobile meaning of the code is P for OBD-II Diagnostic Powertrain (P) Trouble Code For Engine. O for Intake Valve Control Solenoid Circuit Low. 3 for Engine Oil Temperature Sensor Malfunction. 8 for Cylinder 10 Contribution/balance Fault and 9 for Exhaust Gas Recirculation Sensor B Circuit High.