Engine-Codes
 
OBDII Code List
 
P0451 2005 TOYOTA PRIUS

P0451 2005 TOYOTA PRIUS - EVAP System Pressure Sensor Range/Performance

Repair Importance Level: 1/3
Repair Difficulty Level: 3/3  What does this mean?

P0451 2005 Toyota Prius 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 Engine Control Module (ECM)

When is the code detected?

An out of range voltage from the sensor is sent to Engine Control Module (ECM).

P0451 2005 Toyota Prius Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0451 2005 Toyota Prius Meaning

The Evaporative Emission System (EVAP) vapor pressure sensor, VSV for canister closed valve (CCV) and VSV for pressure switching valve are used to detect abnormalities in the evaporative emission control system. The Engine Control Module (ECM) decides whether there is an abnormality in the evaporative emission control system based on the vapor pressure sensor signal.
OBDII Code P0451 2005 Toyota Prius - EVAP System Pressure Sensor Range/Performance - Engine-Codes.com

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