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DTC - Diagnostic Trouble Codes information

P0720

Powertrain Codes

P0720 - 2005 NISSAN ALTIMA - Vehicle Speed Sensor

Symptoms

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

Possible Causes

- Revolution sensor poor electrical connection - Revolution sensor circuit is open or shorted - Faulty revolution sensor - Faulty Engine Control Module (ECM) - Faulty 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

The vehicle speed sensor is called Revolution Sensor on Nissan Altima vehicles. Usually replacing the sensor take care of the P0720 code.

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. 2005 Nissan Altima Revolution Sensor Location 2005 Nissan Altima Revolution Sensor Wire Diagram