EVAP System Pressure Sensor Range/Performance
Table of contents
- Possible Causes
- How To Fix
- Tech Notes
- Cost To Diagnose
- When is the code detected
- Possible Symptoms
- Description
P0451 TOYOTA 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)
How do I fix code P0451 TOYOTA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- There is a Factory Service Bulletin for the following Toyota models:
- 2003-2004 Toyota 4Runner
- 2003-2004 Toyota Tundra
- 2004 Toyota Camry
- 2004 Toyota Sienna
- 2004 Toyota Highlander
- 2004 Toyota Solara
- Toyota Factory Service Bulletin OBDII Code P0451
Cost of diagnosing the P0451 TOYOTA code
The cost of diagnosing the P0451 TOYOTA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
An out of range voltage from the sensor is sent to Engine Control Module (ECM).
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0451 TOYOTA 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.