What is the meaning of OBD-II code P0705, and what are the possible causes and solutions for this code to be generated?

Diagnostic trouble code P0705 indicates a problem with the Transmission Range Sensor (TRS), which tells the Engine Control Module (ECM) or Transmission Control Module (TCM) the position of the shift lever. There are three types of TRS, including contact type, pressure range switch, and a variable resistor, each with its own function in determining the shifter position. There are several possible causes for a P0705 code, such as: -Problem with the TRS wiring circuit -Defective TRS -Defective engine control module or transmission control module -Incorrectly adjusted shifting mechanism -Dirty or impure transmission oil -Faulty transmission control valve To diagnose the problem, a mechanic will typically verify the voltage and ground of the Transmission Range Sensor, back probe each wire while changing gears, measure the reference voltage, and verify the output to ground. The resolution to the P0705 code will depend on the cause, which may include repairing the TRS circuit, replacing the TCM or ECM, changing the transmission fluid, adjusting the linkage, or replacing a faulty gear shifter. Before replacing parts, it's advised to check the adjustment of the shift linkage and the state of the transmission fluid.