P1617 – TCM Communication Line (Nissan)

Description

The ECM detected a malfunction in the TCM communication line.

Need More Than Just the Fault Code?

A diagnostic scanner with live data, freeze-frame information and the right system access can help you investigate the actual cause before replacing parts.

Compare Diagnostic Scanners

Symptoms

  • Harsh shifting
  • Warning light

Causes

  • CAN issue
  • Wiring fault
  • TCM error

Diagnosis

  • Check CAN wiring
  • Inspect connectors
  • Scan TCM data

Repair

  • Repair wiring
  • Replace TCM