P1706 – Neutral Position Switch (Toyota)

Description

The ECM detected a malfunction in the neutral position switch affecting gear detection and shift logic.

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Symptoms

  • Incorrect gear display
  • No start in gear
  • Harsh shifting
  • Failsafe mode
  • Check engine light

Causes

  • Faulty neutral switch
  • Misadjusted switch
  • Damaged wiring
  • Connector corrosion
  • TCM signal fault

Diagnosis

  • Check switch alignment
  • Inspect wiring
  • Test switch output
  • Scan TCM data
  • Check connectors

Repair

  • Adjust switch
  • Repair wiring
  • Replace switch
  • Clean connectors

Related Problems

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