DT Codes . com
DTC - Diagnostic Trouble Codes information

P0720

Powertrain Codes

P0720 - INFINITI - Vehicle Speed Sensor

Symptoms

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

Possible Causes

- Harness or connectors - Sensor circuit is open or shorted - Revolution sensor - Damaged ECM - Damaged Transmission Control Module (TCM)

When Detected

Diagnostic trouble code is detected when Transmission Control Module (TCM) does not receive the proper voltage signal from the sensor.

Tech Notes

On most Infiniti vehicles, the vehicle speed sensor is called Revolution Sensor

Description

The speed sensor (revolution 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.