Trouble Code Po446

Fault code P 0446 - RennTech.org Forums

Quick question: Did this code trip just after filling the tank? Reason I ask is that the early cars seem more prone to throw this code after a fill up, and when that happens the code is usually a “ghost” code caused by a momentary purge line blockage during the filling process. If it was, clear the code and it most likely will not come back, at least until your next fill up. If the code comes back, see below. Normally, if the P0446 code is thrown, it is caused by a blockage if the air purge line in the EVAP system. This code can often be corrected by simply blowing air through the purge line, which is in the engine bay, under the intake manifold. A bit of a pain in the butt to get at, but a quick “pffft” of compressed air will take care of the issue. Quick question: Did this code trip just after filling the tank? Reason I ask is that the early cars seem more prone to throw this code after a fill up, and when that happens the code is usually a "ghost" code caused by a momentary purge line blockage during the filling process. If it was, clear the code and it most likely will not come back, at least until your next fill up. If the code comes back, see below. Normally, if the P0446 code is thrown, it is caused by a blockage if the air purge line in the EVAP system. This code can often be corrected by simply blowing air through the purge line, which is in the engine bay, under the intake manifold. A bit of a pain in the butt to get at, but a quick "pffft" of compressed air will take care of the issue.

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