Maytag Neptune will not spin sounds like ground glass c flashing..

The problem is that your dryer is dirty and something has come apart, probably in the fan housing. Take the dryer apart and clean every duct by removing it and cleaning with soap and water. You need a long handle wire brush or good plastic brush. Clean the blower, element housing, everything. You should also replace the belt and grease all bearings and rollers with lithium grease. You will get about a five gallon bucket of dirt out of a dryer 2-3 years old. Sensors cannot work with all that dirt. Make sure to clean out door parts that move air, too. Look in every part and clean it all. It should work very well when you are through and have replaced what came apart. Here are some manuals:https://dl.dropboxusercontent.com/u/8010163/Maytag%20Dryers.zip
You should find what that code means in a manual. If not, go here: http://www.appliancepartspros.com/repair-help/appliance-fault-codes.html#Whirlpool%20Duet%20Front%20Loading%20Ga s%20and%20Electric%20Dryer%20Fault%20Codes
Good luck, and if you have any more questions write back.