P0112 – Intake Air Temperature Sensor Low Input

Description

The intake air temperature sensor is reporting a low signal.

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Symptoms

  • Rough idle
  • Hesitation
  • Poor acceleration
  • Hard starting
  • Check engine light

Causes

  • Faulty IAT sensor
  • Damaged wiring
  • Unplugged sensor
  • Air intake leak
  • ECU issue

Diagnosis

  • Inspect IAT wiring
  • Check sensor connector
  • Test IAT resistance
  • Inspect intake system
  • Scan live data

Repair

  • Replace IAT sensor
  • Repair wiring
  • Fix intake leaks
  • Reconnect sensor
  • Update ECU if needed

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