Check engine light goes on and off with a 446 code. Already change vent valve solenoid. Changed fuel filter checked wires and hoses.. gotta go through e-check soon. Any other suggestions on what could be causing problem?
What makes this problem better or worse?
Nothing really. The light will stay off for about 3 days.when it does reset itself
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Read this about the code:
https://repairpal.com/obd-ii-code-p0446
Note that testing is needed to find out what's going on. The link will tell you more.