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Vehicle in and out of dealership under warranty since the beginning of March 2014 until now. Went in for MIL that coded to PCM DTCs P219A and P219B. Numerous fuel system repairs completed (purge, fuel valve, O2 sensor, injectors, catalytic converter + gasket). Ford FSE is saying the MIL and DTCs will be alleviated with the new PCM calibration due out next month (June 2014). Issues from 3/7/14 to 5/23/14: Consistent MIL, DTCs (P219A + P219B), lack of power, drastically decreased fuel economy, A/C fan cutoffs when braking at low speeds. Ford FSE is saying it's safe to take vehicle home from dealership and operate until the new calibration is released even though MIL stays on.

Any ideas? Thanks!

Vehicle: 2014 Ford Mustang 5.0L GT California Special

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do you have a K&N air filter installed? some people have issues with them since they use oil and the mass air flow meter gets oil on it.

does the light come on when its cold outside?

Guys who are moddifed have got a tune that fixed the issues.

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