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P0450 Scion

P0450 Scion - Evaporative Emission Control System Pressure Sensor/Switch

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P0450 Scion Comments |  Add Comment
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
- EVAP system hose (pipe from air inlet port to canister pump module, canister filter, fuel tank vent hose)
- Faulty Engine Control Module (ECM)
Help with Possible causes What does this mean?
When is the code detected?
10 seconds or less after engine starting condition vapor pressure sensor fixed value continues for fixed value or more.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0450 Scion Description

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 P0450 Scion - Evaporative Emission Control System Pressure Sensor/Switch
P0450 Scion Information for specific Scion models
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