P1453 LEXUS, TOYOTA: FUEL TANK PRESSURE SENSOR HIGH INPUT
POST UPDATED IN January, 2023
P1453 Code failures by brands
Description of DTC code P1453
The ECM (Engine Control Module) authorizes the purge VSV and the fuel vapors stored in the canister to be purged into the intake manifold. This process is carried out with the engine running and certain conditions (closed loop, among others). The ECM varies the duty cycle ratio of the purge VSV to control the flow volume. Besides, the intake manifold pressure determines the purge flow volume. Atmospheric pressure is used into the canister through the vent valve to ensure that flow is maintained when negative pressure or vacuum is applied to the canister.
The lockout monitor checks the EVAP (Evaporative Emission System) for leaks and the tank pump for proper operation. The monitor goes up 5 hours after the ignition switch is turned off. It is needed more than 5 hours to allow the fuel to cool down and thus the fuel tank pressure (FTP) to stabilize, resulting in higher accuracy of the EVAP system monitor.
The OBDII fault code P1453 is set when a high input is detected at the Fuel Tank Pressure Sensor.
Symptoms of fault code P1453
- Check Engine lamp ON.
- Reduction in engine power.
Causes of OBD2 P1453
Reasons for setting the P1453 OBD2 diagnostic code:
- The fuel tank pressure sensor wiring may be damaged.
- The Fuel Tank Pressure Sensor may be in poor condition.
- The ECM may be damaged.
Possible solutions of the DTC code P1453
Steps to troubleshoot the DTC P1453 OBDII code:
- Consult the Technical Service Bulletins.
- Check the Fuel Tank Pressure Sensor wiring for common damage caused by wear or burns. Repair or replace as required.
- Verify the integrity of the fuel tank pressure sensor circuit connections, as well as the sensor itself. Follow the manufacturer's recommendations to carry out the diagnosis of these. If you discover deficiencies in one of them, make the necessary corrections.
