Question about Cars & Trucks
Code p2258 My smog Test didn't pass what is the part I need to change
Secondary air injection system control A circuit high ,,,,, this only works on start from cold so you have another problem wirh emissions maby cat or more ,,, get diagnostic done on engine sensors to rule this out ,,,, ideally if you are doing this yourself get a data reading from the engine sensors and compare with another car of tne same type ,,, faulty sensors dont always leave a trouble code
Posted on Nov 23, 2013
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Posted on Jan 02, 2017
Your P0446 code is a Evap vent valve code: 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 will set. Code also may refer to ECM detecting that EVAP system is unable to achieve or maintain vacuum during test.
Symptoms There will be no obvious symptoms to driver, other than MIL illumination.
Causes A code P0446 could mean one or more of the following has happened:
Posted on Nov 20, 2009
SOURCE: Got a P1404 Fault on
Posted on Aug 31, 2011
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