That and they are very well known for failing after a flush is performed when one hasn't been done in a long time.Was the transmission having any issues before it gave out? Any weird noises? Is it automatic? If so, with the very limited information here I'm going to agree with lethal6. Those civics don't have great automatics, it's not uncommon for them to fail if any service is skipped
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Had a problem like that, mine was from having a broken shift er, mine is a automatic trans, the problem was it was broken like sense( not senser like chip problem more like a fail safe mech)I have a 2004 honda civic ex coupe that wont go into gear .. i have flushed the transmission fluid which was black ..please help