Possible causes
– Faulty Speed Sensor
– Speed Sensor harness is open or shorted
– Speed Sensor circuit poor electrical connection
– Speed Sensor harness is open or shorted
– Speed Sensor circuit poor electrical connection
When is the code detected?
Diagnostic trouble code is detected when Transmission Control Module (TCM) does not receive the proper voltage signal from the sensor.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Speedometer improper reading
– Possible shifting problems
– Speedometer improper reading
– Possible shifting problems
P0720 HYUNDAI Description
The speed sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. The pulse signal is sent to the Transmission Control Module (TCM) which converts it into vehicle speed.
HYUNDAI Technical Service Bulletins for P0720 code
1999 HYUNDAI SONATA ENGINE AND ENGINE COOLING:ENGINE
2001 HYUNDAI SANTA FE ENGINE AND ENGINE COOLING:ENGINE
2001 HYUNDAI XG ENGINE AND ENGINE COOLING:ENGINE
2003 HYUNDAI TIBURON ENGINE AND ENGINE COOLING:ENGINE
2005 HYUNDAI TUCSON ENGINE AND ENGINE COOLING:ENGINE
2001 HYUNDAI ELANTRA ENGINE AND ENGINE COOLING:ENGINE