P1706 - FAULT CODE - OBD2

POST UPDATED IN February, 2023

P1706 Code failures by brands

P1706 INFINITI, NISSAN: PARK AND NEUTRAL POSITION SWITCH

Description of DTC code P1706

The gearshift lever is used to activate or deactivate, as required, the gearbox ratios. In the case of vehicles with a manual transmission, this lever is used to shift gears. This is an action that is usually carried out while the clutch is depressed to release the engine from the transmission and the wheels.

When the shift position is P or N, the park/neutral position switch is activated. The ECM (Engine Control Module) detects this position due to line continuity. The PNP (Park/Neutral Position) switch assembly also signals a transmission range switch, so it is possible to detect the position of the shift lever.

The diagnostic code P1706 OBDII is used by Infiniti and Nissan manufacturers to indicate that the park/neutral position switch signal does not change in the process of starting and driving the vehicle.

Symptoms of fault code P1706

Causes of OBD2 P1706

Reasons to set the P1706 OBD2 fault code:

  • The parking/neutral switch may be set incorrectly.
  • Park/Neutral Position circuit wires or connectors may be faulty.
  • The parking/neutral switch may be faulty.

Possible solutions of the DTC code P1706

Steps to troubleshoot DTC P1706 OBDII:

  • Consult the Technical Service Bulletins.
  • Check for common deficiencies in the parking/neutral switch circuit. If you discover burns, corrosion, or wear on the wires or connectors of the circuit, make repairs.
  • Measure the parking/neutral switch circuit voltages and check they are appropriate for good circuit performance. If some voltages have been detected that cause an open or short circuit, repairs are necessary.
  • Check the installation of the parking/neutral switch for inconsistencies. If necessary, adjust the switch.
  • If the P1706 code is still displayed after performing the checks, the Park/Neutral Position may be in poor condition.

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