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DTC - Diagnostic Trouble Codes information

P0721

Powertrain Codes

P0721 - SUZUKI - Output Speed Sensor Range/Performance

Symptoms

- Engine Light ON (or Service Engine Soon Warning Light) - Speedometer improper reading - Possible shifting problems

Possible Causes

- Speed sensor harness or connectors - Sensor circuit is open or shorted - Speed sensor

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.