Possible causes

– Faulty Electric Throttle Control (ETC)
– Electric Throttle Control (ETC) harness is open or shorted
– Electric Throttle Control (ETC) circuit poor electrical connection

Tech notes

There is a service bulletin for a various Nissan Models with the RE5R05A transmission.
Factory Nissan Service Bulletin OBDII Code P1705

Symptoms

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

P1705 NISSAN Description

Electric Throttle Control (ETC) actuator consists of throttle control motor, accelerator pedal position sensor, throttle position sensor, etc. The actuator sends a signal to the Engine Control Module (ECM), and ECM sends signals to TCM with CAN communication.