P1603 LEXUS, TOYOTA: ENGINE STALL HISTORY
POST UPDATED IN January, 2021
P1603 LEXUS, TOYOTA: ENGINE STALL HISTORY
The fuel system of the vehicle has the function of storing and later supplying this compound. The fuel must be combined with air in the engine's intake system, and in the same place, it is atomized and vaporized so that it can be reduced in the cylinder, and then it is ignited to produce energy or power. Although the fuel systems may be different from one engine to another, they are all the same because their purpose is to supply the fuel to the combustion chamber and to control the amount of fuel sent to the amount of air.
The fuel pressure is regulated depending on the type of system. When it is with the return, a regulator is used that changes the fuel pressure depending on the amount of vacuum in the intake system. In this way, the quantity of fuel pressure and flow as it achieves the injectors remains consistently the same. But in a non-return type system, the PCM (Powertrain Control Module) is used to regulate the fuel supply. A Fuel Pressure Sensor is installed on the rail that supplies the fuel to the injectors to allow the controller to adjust the pressure. When the pressure and flow of fuel drop due to increased engine speed or load, the PCM balances this process by raising the duration of the injector or the operating speed of the fuel pump.
Toyota's establishment of failure code P1603 OBDII indicates that it occurs when the fuel pressure in the rail falls below the threshold, causing the engine to stop.
The reasons for setting the DTC code P1603 OBD2 are the following:
To solve the diagnostic code P1603 OBDII, you should consider the following: