you don't need a scanner for your car - the ECU is located in the passenger side footwheel under the carpet - raise the carpet and expose the ECU - you will see a flashing red light on top of the ECU - it will flash a number of times, pause, and flash again - count the number of flashes between pauses and that will tell you the code - could be more than one code - once you have determined the code look here to see what it means:

http://tech.hybridgarage.com/tech/codes.html