Chrysler is the only manufacturer that has been able to make an engine run right without a mass air flow sensor. For everyone else, any air that sneaks in that doesn't go through that sensor doesn't get included in the fuel needs calculation. That includes a leak in the fresh air tube between the mass air flow sensor and throttle body, a cracked or leaking vacuum hose, a leaking intake manifold gasket, or "a pcv hose that is torn to pieces". Replace that first, then see if the code comes back. I don't know if your Check Engine light will be off when you restart the engine, but if the problem isn't detected again, the code should self-erase after as many as 50 starts.
Saturday, December 15th, 2012 AT 2:39 AM