Possible causes – Faulty Throttle Body– Carbon in throttle – Broken Throttle return spring– Throttle sticky– Throttle icy Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1523 HYUNDAI OBD Code Description The Electronic Throttle Control (ETC) system is made of the components throttle body, Throttle Position Sensor (TPS )1&2 and Accelerator Position…