P0840 INFINITI – Transmission Fluid Pressure Sensor ‘A’

P0840 INFINITI Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P0840 INFINITI Possible Causes

Faulty Transmission Fluid Pressure Sensor ‘A’,Transmission Fluid Pressure Sensor ‘A’ harness is open or shorted,Transmission Fluid Pressure Sensor ‘A’ poor electrical connection,Transmission Valve Body

P0840 INFINITI Description

The transmission fluid pressure sensor A (primary pressure sensor) detects primary pressure of Continuously Variable Transmission (CVT) and sends Transmission Control Module (TCM) the signal.