overdrive shut off
Get your brakes checked. It can be something simple, or it can mean impending doom.
It means there is a problem with the emissions system. Seek professional help.
I believe it is a input speed sensor. Hyundai calls them pulse generators on the 99 elantra.
Trouble code P0750 means:Shift solenoid A malfunction
P0443, EVAP System Purge Control Circuit Malfunction. P0444
Transmission problems.
it is probably the thermostat any one can change one on a Hyundai they cost under $15.00
My best guess would be for the parking break. Easy way to test, when the car is running just pull the lever or step on the lever and see what light turns on
Trouble code P0136 means: O2 Circuit (Bank 1, Sensor 2)
Trouble code P2300 means: Ignition Coil "A" Primary Control Circuit Low
Trouble code P0422 means: Main Catalyst Efficiency Below Threshold (Bank 1)
Trouble code P1624 means: Cooling Fan Relay Circuit Malfunction, Low Circuit