P1117 – Engine Coolant Temperature Sensor Low Input (Nissan)

Description

The ECM detected a low input signal from the engine coolant temperature sensor.

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Symptoms

  • Hard starting
  • Poor fuel economy
  • High idle
  • Check engine light

Causes

  • Open circuit
  • Faulty sensor
  • Connector corrosion
  • Wiring damage

Diagnosis

  • Check wiring continuity
  • Inspect sensor
  • Check connectors
  • Scan live data

Repair

  • Repair wiring
  • Replace sensor
  • Clean connectors

Related Problems

Related Fault Codes