....not so sure that "odometer fraud" is the complaint your looking for. The dealer looks to be guilty of selling a car with a nonworking ODO (as both BB and CJ have pointed out), but proving the dealer tried to defraud you may be more trouble than it's worth. Apparently, the dealer made a half-assed attempt to repair the malfunctioning sending unit, but didn't insure that it worked properly. Personally, I suspect that the whole ODO system was tampered with and screwed up at some time, but it may not have been the dealer who did the initial damage.
If your question now is ....can you legally return the car and undo the deal, it appears you can. You can inform the DMV of your suspicions and they should handle the dealer from there. If you do have the legal right to return the car and start over I would certainly take it. There are hundreds of thousands of those Hondas in the market, and it would be far better to find one that you knew hadn't been tampered with in any way.
If your question now is ....can you legally return the car and undo the deal, it appears you can. You can inform the DMV of your suspicions and they should handle the dealer from there. If you do have the legal right to return the car and start over I would certainly take it. There are hundreds of thousands of those Hondas in the market, and it would be far better to find one that you knew hadn't been tampered with in any way.