Originally Posted by 1slow370

it's in the owners manual a blinking ses light means that the car is detecting misfire, and congratulations this is the 5000th thread about p0300! you've won the title of permanewb. p0300 is the ecu's catch all for something isn't right. there are over 5 pages of troubleshooting in the factory service manual on it that basically referance every other chapter in the manual, so good luck fixing it.

Edit: the only real fix is to take it to 3 or 4 dealerships porbably about 10 times until they finally figure out what is wrong.