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The P0450 is a fair;ly straight forward code pointing to a fault in the Vapor Pressure Sensor (it's part of the EVAP/Emissions System). It's located under the hood, at the rear of the engine compartment. Carefully inspect the vacuum lines for any cracks, holes or loose/missing connections. Inspect the electrical connector for any loose or broken wires. If the visual inspection checks ok, replace the sensor.
Hello again, what tools will I need to change the P0450 pressure sensor switch. thanks