P0110 – Intake Air Temperature Circuit Malfunction

Description

The ECM detects an incorrect or implausible signal from the IAT sensor.

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Symptoms

  • Poor fuel economy
  • Hard starting
  • Rough idle

Causes

  • Faulty IAT sensor
  • Wiring issues
  • Connector corrosion

Diagnosis

  • Monitor IAT data
  • Inspect wiring
  • Check connector

Repair

  • Replace IAT sensor
  • Repair wiring

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