P1554 – Cruise Control Inhibit Signal Fault (Nissan)

Description

The ECM detected a malfunction in the cruise control inhibit signal.

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Symptoms

  • Cruise disabled
  • Warning light

Causes

  • Wiring issue
  • Switch failure
  • ECM logic fault

Diagnosis

  • Check inhibit signal
  • Inspect wiring
  • Scan cruise data

Repair

  • Repair wiring
  • Replace switch