P1185 – Engine Oil Temperature Sensor Range/Performance (Nissan)

Description

The ECM detected an oil temperature sensor signal outside the expected range.

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Symptoms

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

Causes

  • Faulty sensor
  • Low oil level
  • Oil contamination
  • Wiring issues

Diagnosis

  • Test sensor output
  • Inspect wiring
  • Check oil level
  • Scan live data

Repair

  • Replace sensor
  • Repair wiring
  • Refill oil
  • Clean connectors

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