Seat P0446 Evaporative Emission Vent System Performance

Description

OBD-II Trouble Code Description for P0446 Seat

Evaporative Emission System Vent Control Circuit

What does this mean?

OBD2 Code P0446 Seat definition:
Evap vent valve has only one purpose. It closes in order to seal the vent so the EVAP system can pressurize and ensure there are no leaks. Evap vent valve is usually supplied Batt. voltage with key on. The ECM’s driver controls the ground, and when grounded, activates the valve (closing it). If the ECM detects a short to ground, and open,or a short to battery voltage on the control circuit, P0446 Seat will set. Code also may refer to ECM detecting that EVAP system is unable to achieve or maintain vacuum during test.

Symptoms

Possible sumptoms of OBD code P0446 Seat
There will be no obvious symptoms to driver, other than MIL illumination.

Causes

Possible causes of OBD code P0446 Seat
A code P0446 Seat could mean one or more of the following has happened: Faulty vent valve Open, short or excessive resistance on Vent valve control circuit Blockage of vent valve Bad PCM

Possible Solutions

With a P0446 Seat OBD-II trouble code, here are some things to try: Replace Vent valve Repair open, short, or resistance problem in control circuit Repair open, or short, or resistance problem in power circuit Replace PCM

Related Codes

P0440 Seat P0441 Seat P0442 Seat P0443 Seat P0453 Seat P0455 Seat P0456 Seat


The OBD2 Code Information Be Applicable For Seat:

2013 Seat Mii,2013 Seat Leon,2013 Seat Ibiza Cupra,2013 Seat Ibiza,2012 Seat Toledo Concept,2012 Seat Exeo ST,2012 Seat Exeo,2012 Seat Alhambra 4WD,2011 Seat Ibiza,2010 Seat Ibiza,2009 Seat Leon,2009 Seat Ibiza,2009 Seat Altea,2007 Seat Altea,2006 Seat Leon,2006 Seat Ibiza,2005 Seat Toledo,2005 Seat Altea,2004 Seat Ibiza,2004 Seat Cordoba,2002 Seat Ibiza

 

Note:

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