P0182 can come on for a number of reason, most commonly theres an issues with the wiring harness that connects to the sensor (Which sits on the fuel rail). I can't tell you the number of times I've seen these harness ruined by critters that climb up into your engine compartment and chew on wires. The sensor itself can also be bad and reading a low ambient operating temperature or just operating outside normal temps. The bad news is it could also be a bad PCM or a short in the PCM, which would mean some real money thrown at this to fix it.
My advise would be to inspect the wires running to your fuel rails and look for any damage. Also try cleaning your Mass Air Flow sensor, if this is reading too high or low it can throw off other temperature readings. How To: http://www.fordf150.net/howto/clean-...low-sensor.php
If the wiring looks good you can try replacing the sensor, however you should probably know what youre doing before you go messing around with fuel rails. Also after the sensor is replaced you'll need to reflash the PCM.
Good luck and if you need any more info don't hesistate to ask.