P0453 Code - Evaporative Emission Control System Pressure Sensor High Input

What Does P0453 Mean?

This indicates that a portion of the EVAP control system is no longer functioning properly. The EVAP system consists of components including (but not limited to) the gas cap, fuel lines, charcoal canister, purge valve, system pressure and flow sensors, electrical wiring and connectors, vacuum lines, the fuel tank, and fuel vapor hoses.

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What are the common causes of P0453 ?

Modern emissions systems include an EVAP canister which allows fuel tank vapors to be collected and purged back into the engine, where they can be burnt rather than expelled into the atmosphere. EVAP systems feature a pressure sensor that monitors the system’s integrity, and at regular intervals the EVAP system performs a pressure test on itself, checking that there are no leaks in the system. In a P4053 code instance, the EVAP sensor or fuel tank pressure (FTP) sensor is sending information to the PCM that indicates a higher than normal pressure in the EVAP system. Please note that on some vehicles, the FTP is incorporated into the electric fuel pump assembly in the tank.

How do you troubleshoot P0453 ?

The valves of each cylinder are kept closed using a pair of arms that replace the conventional engine's roller-type rocker arm. P0453 code one of these arms follows the cam profile while the second arm connects to the valves. During normal engine operation the two arms are joined by a locking pin.



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