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P0451 – 2004_TOYOTA_HIGHLANDER

Code : P0451
Make : 2004_TOYOTA_HIGHLANDER
Description : P0451 2004 TOYOTA HIGHLANDER EVAP System Pressure Sensor Range/Performance
Possible causes :
– Faulty Evaporative Emission System (EVAP) Vapor Pressure Sensor
– Evaporative Emission System (EVAP) Vapor Pressure Sensor harness is open or shorted
– Evaporative Emission System (EVAP) Vapor Pressure Sensor circuit poor electrical connection
– Faulty Engin
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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