Ford 2015 FOCUS Owner's Manual page 145

Fuel and Refueling
Allow the vehicle to sit for at least eight
hours without starting the engine. Then,
start the engine and complete the above
driving cycle. The engine must warm up to
its normal operating temperature. Once
started, do not turn off the engine until the
above driving cycle is complete. If the
vehicle is still not ready for I/M testing, you
will have to repeat the above driving cycle.
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Focus (CDH) Canada/United States of America, enUSA