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P0111 2006 FORD FUSION

P0111 2006 FORD FUSION - Intake Air Temperature Sensor 1 Circuit Range/Performance Problem

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3   
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Possible causes

  • Faulty Intake Air Temperature (IAT) sensor
  • Dirty air filter
  • Intake Air Temperature (IAT) sensor harness is open or shorted
  • Intake Air Temperature (IAT) sensor circuit poor electrical connection

Tech notes

Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air flow sensor with mass air flow sensor cleaner. Reset code and drive vehicle. If the code comes back, it may be necessary to replaced the mass air flow sensor.

When is the code detected?

An excessively low or high voltage from the sensor is sent to ECM.

Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0111 2006 Ford Fusion Description

Indicates the IAT rationality test has failed. This DTC indicates that the IAT value is higher than a calibrated value and could prevent one or more on-board diagnostic (OBD) monitors from completing.

The powertrain control module (PCM) runs this logic after an engine off and a calibrated soak period (typically 6 hours). This soak period allows IAT and engine coolant temperature (ECT) or cylinder head temperature (CHT) to stabilize and not differ by more than a calibrated value. DTC P0111 sets when the IAT at engine start exceeds the ECT or CHT by more than a calibrated value, typically 17°C (30°F).

OBDII Code P0111 2006 Ford Fusion - Intake Air Temperature Sensor 1 Circuit Range/Performance Problem - AutoCodes.com

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Related Information

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