P0840 JEEP – Transmission Fluid Pressure Sensor/Switch ‘A’ Circuit

P0840 JEEP Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P0840 JEEP Possible Causes

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

P0840 JEEP Description

The Transmission Control Module (TCM) monitors the Transmission Fluid Pressure Sensor/Switch signal. The TCM sets the OBDII code when the Transmission Fluid Pressure Sensor/Switch is not to factory specifications.