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P0446 1999 Toyota Camry

P0446 1999 Toyota Camry - EVAP System Vent Control Circuit

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P0446 1999 Toyota Camry Comments |  Add Comment
Possible causes
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Vent control valve harness is open or shorted
- Vent control valve circuit poor electrical connection
- Faulty vent control valve
What does this mean? What does this mean?
Tech notes
There are factory service bulletin for the 1999 Toyota Camry:

Toyota Factory Service Bulletin OBDII Code P0446





User submitted video
What does this mean? What does this mean?
When is the code detected?
The P0446 codes triggered when an improper voltage signal is sent to Engine Control Module (ECM) through EVAP canister vent control valve.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible a noticeable fuel odor caused by the release of fuel vapors
P0446 1999 Toyota Camry Description

The Evaporative System (EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent.

This solenoid valve responds to signals from the Engine Control Module (ECM). When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components.

This solenoid valve is used only for diagnosis, and usually remains opened.

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