iuksob03 Posted November 12, 2006 Share Posted November 12, 2006 Just started getting a CEL and blinking cruise light. AP pulled P0458 Evaporative Emission Control System Purge Control Valve Circuit Low. Any help on what to go after here? Gas cap has been checked and is alright. Link to comment Share on other sites More sharing options...
sumfoo1 Posted December 6, 2011 Share Posted December 6, 2011 me too i wonder if you were able to fix it. it showed up right after my AOS install Link to comment Share on other sites More sharing options...
Max Capacity Posted December 7, 2011 Share Posted December 7, 2011 me too i wonder if you were able to fix it. it showed up right after my AOS install I'm guessing something was knocked off during the install. I had no CEL after my AOS was installed. 305,600miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. (SOLD). CHECK your oil, these cars use it. Engine Build - Click Here Link to comment Share on other sites More sharing options...
sumfoo1 Posted December 7, 2011 Share Posted December 7, 2011 i also installed a turbo inlet pipe that doesn't have the provisions for the factory pcv connector http://www.perrinperformance.com/shared/PERRIN/documents/instructions/subaru/pspint420.pdf i followed the directions shown here and... now i'm throwing a code... i don't get it. Link to comment Share on other sites More sharing options...
bmx045 Posted December 7, 2011 Share Posted December 7, 2011 i also installed a turbo inlet pipe that doesn't have the provisions for the factory pcv connector http://www.perrinperformance.com/shared/PERRIN/documents/instructions/subaru/pspint420.pdf i followed the directions shown here and... now i'm throwing a code... i don't get it. and you removed the pin from the pcv valve plug and placed it into the stock harness connector? Link to comment Share on other sites More sharing options...
sumfoo1 Posted December 7, 2011 Share Posted December 7, 2011 10-4 Link to comment Share on other sites More sharing options...
bmx045 Posted December 7, 2011 Share Posted December 7, 2011 something isn't routed properly, recheck your lines Link to comment Share on other sites More sharing options...
sumfoo1 Posted December 7, 2011 Share Posted December 7, 2011 i really think it's the ECU now... i have the dead relay constant on problem and I've read that it can fry this circuit too. I'll have it replaced next week. Link to comment Share on other sites More sharing options...
PoManzAWD Posted December 7, 2011 Share Posted December 7, 2011 Just started getting a CEL and blinking cruise light. AP pulled P0458 Evaporative Emission Control System Purge Control Valve Circuit Low. Any help on what to go after here? Gas cap has been checked and is alright. How did you check the gas cap? Just because it's tight, doesn't mean it's working as it should. Gas caps have a check valve in them that lets air in, but not air/fuel vapors out. If this check valve sticks open or shut, you will get EVAP system codes. BUT... like said above, based on this code, it sounds like there's a problem with the purge solenoid or wiring/connector to the solenoid. I'm not positive where the "charcoal box" is on your model Legacy, but it's probably behind the rear axle. Sometimes the purge solenoid is there, or mounted up close to a vacuum source (intake manifold). Joel Link to comment Share on other sites More sharing options...
sumfoo1 Posted December 7, 2011 Share Posted December 7, 2011 that EECSPCV thing is just the regular PCV valve right?? Link to comment Share on other sites More sharing options...
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