P1701 – TCM Power Supply (Nissan)

Description

The ECM detected a malfunction in the TCM power supply circuit.

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Symptoms

  • Harsh shifting
  • Warning light

Causes

  • Blown fuse
  • Wiring issue
  • TCM fault

Diagnosis

  • Check fuses
  • Inspect wiring
  • Scan TCM data

Repair

  • Replace fuse
  • Repair wiring