P1740 – Torque Converter Clutch Solenoid (Nissan)

Description

The ECM detected a malfunction in the torque converter clutch solenoid.

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Symptoms

  • Shuddering
  • Harsh shifting

Causes

  • Solenoid failure
  • Hydraulic issue
  • Wiring fault

Diagnosis

  • Check solenoid resistance
  • Inspect wiring
  • Scan TCM data

Repair

  • Replace solenoid
  • Repair wiring