Not sure about the solenoid on the accord, doubtful that the MAP sensor would be bad, the ecu should throw a code for it if it gave a value out of range. Was you're IM taken off and cleaned? You may be able to use the "suck" test on the solenoid described above, or jumper it to see if it's working OK. I haven't decided what to do yet, the cel doesn't affect performance hardly at all, so no hurry. Will probably replace the IM with skunk2 as first step in an upgrade.