OBD-II Trouble Code Description for P0721 Dodge

Output Speed Sensor Circuit Range/Performance

What does this mean?

OBD2 Code P0721 Dodge definition:
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.

Symptoms

Possible sumptoms of OBD code P0721 Dodge
– Engine Light ON (or Service Engine Soon Warning Light) – Speedometer improper reading – Possible shifting problems

Causes

Possible causes of OBD code P0721 Dodge
– Speed sensor harness or connectors – Sensor circuit is open or shorted – Speed sensor

Possible Solutions