My 2003 odyssey (63K miles) turned on the check engin light with on and off TCS light (I think it is only turned on with high rpm on the highway).
In terms of driving a car, I don't feel any problem except for those lights on. I went to Autozone and let them do OBDII test. It tured out to be a knock sensor error (P0325) due to defective knock sensor or wire problem. The guy from Autozone said to me that it would be quite easy to replace a knock sensor. But I wonder how you guys are thinking about this. I've replaced spark plugs for my other car (CR-V) by myself. How difficult is this compared with other maintenance jobs?
The price of knock sensor is about $30, so I'm tempted to do that by myself. I wonder how much money will be charged from the honda dealer.