P0451 Evaporative Emission Control System Pressure Sensor Range/Performance

Question

2001 Mitsubishi Galant 2.4L, with code P0451 Evaporative Emission Control System Pressure Sensor Range/Performance. What is the best solution?

Answer 1

Hi there,

This code appears when the pressure sensor doesn't change. This can be caused by a bad pressure sensor, but also if there is a leak in the vent control or the evap system. These are actually more common failures then the pressure sensor itself.