Land Rover P0446 Evaporative Emission Vent System Performance

Description

OBD-II Trouble Code Description for P0446 Land Rover

Evaporative Emission System Vent Control Circuit

What does this mean?

OBD2 Code P0446 Land Rover 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 Land Rover 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 Land Rover
There will be no obvious symptoms to driver, other than MIL illumination.

Causes

Possible causes of OBD code P0446 Land Rover
A code P0446 Land Rover 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 Land Rover 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 Land Rover P0441 Land Rover P0442 Land Rover P0443 Land Rover P0453 Land Rover P0455 Land Rover P0456 Land Rover


The OBD2 Code Information Be Applicable For Land Rover:

2013 Land Rover,2012 Land Rover,2011 Land Rover,2010 Land Rover,2009 Land Rover ,2008 Land Rover,2007 Land Rover,2006 Land Rover,2005 Land Rover,2004 Land Rover,2003 Land Rover,2002 Land Rover

 

Note:

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