Description
OBD-II Trouble Code Description for P0446 Isuzu
Evaporative Emission System Vent Control Circuit
What does this mean?
OBD2 Code P0446 Isuzu 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 Isuzu 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 Isuzu
There will be no obvious symptoms to driver, other than MIL illumination.
Causes
Possible causes of OBD code P0446 Isuzu
A code P0446 Isuzu 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 Isuzu 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
The OBD2 Code Information Be Applicable For Isuzu:
2011 Isuzu Rodeo 3.0 Denver,2008 Isuzu Pickup,2007 Isuzu Ascender,2002 Isuzu Axiom XST Concept,2002 Isuzu Axiom XSR Concept,2001 Isuzu Zen Concept,2001 Isuzu GBX Concept,2001 Isuzu Axiom XSF Concept
Note:
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