P1289 – Cylinder Head Temperature Sensor (Nissan)

Description

The ECM detected a malfunction in the cylinder head temperature sensor.

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Symptoms

  • Overheating
  • Hard start

Causes

  • Faulty sensor
  • Wiring issue
  • ECM signal error

Diagnosis

  • Check sensor resistance
  • Inspect wiring
  • Scan live data

Repair

  • Replace sensor
  • Repair wiring

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