I got a P1607 code which points to ECM malfunction on my 2000 odyssey. The symptom is: the engine runs rough, and when I place the transmission in D4, the D4 light disappears, and the car does not want to move forward. It only happen early in the morning when it is cold. I blow hair dryer on the ECM unit and restart the engine and the problem disappears. So, it is definitely pointing to malfunction in the ECU. Dealer is asking for about one grand for the unit. Any suggestion on which route I should go for the replacement: that is get a rebuilt unit or stick with OEM dealer part. Does anyone knows a reputable web site that I can order the ecu? If I happen to locate a used unit with the exact part number (37820-P8F-A52), do I still need to reprogram the ecu? Thank for your help.