I've got an 04 Accord EX V6, 26k miles. I just got back from the dealer after having them diagnose why the MIL was on. They claim that there is "rodent damage" to the knock sensor subassembly, its not covered under warranty, and its $350 to fix + $105 diagnosis fee. I paid the $105 diag fee and left.

Has anyone heard this excuse, sounds bogus to me? Is replacing this subassembly a DIY project, or should I find someone to do it? How much does the part cost?

Thanks for any help.

Brian