P1114 – IAT Sensor Heater Circuit Malfunction (Ford)

Description

P1114 Ford indicates a malfunction in the IAT sensor heater circuit.

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Symptoms

  • Slow warm-up
  • Poor fuel economy
  • Hesitation

Causes

  • Failed heater element
  • Wiring issues
  • Short to ground

Diagnosis

  • Check heater resistance
  • Inspect wiring
  • Measure heater voltage

Repair

  • Replace IAT sensor
  • Repair wiring