Symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

Possible Causes

- Shaft speed sensor circuit is open or shorted - Poor shaft speed sensor electrical connection - Failed Transmission Revolution Sensor

When Detected

The P0793 code is detected when the vehicle speed is more than the 31 mph and the park/neutral switch is OFF or rhe engine speed is less that 300 RPM.

Description

This sensor detects the rotation speed of the counter gear. By comparing the counter gear speed signal with the direct clutch speed sensor signal, the Engine Control Module (ECM) detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure according to various conditions. Thus smooth gear shifting is performed.