Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID)DTC DIAGNOSISDTC P0112: - INTAKE AIR TEMPERATURE (IAT) SENSOR 1 CIRCUIT LOW
2009 Mercury Milan Premier, 3.0 1, AWD
DTC P0112: - Intake Air Temperature (IAT) Sensor 1 Circuit Low
2009 Mercury Milan Premier, 3.0 1, AWDSECTION DTC P0112: - Intake Air Temperature (IAT) Sensor 1 Circuit Low
DTC P0112: - INTAKE AIR TEMPERATURE (IAT) SENSOR 1 CIRCUIT LOW
| Description: | Indicates the sensor signal is less than the self-test minimum. The IAT sensor minimum is 0.2 volt or 121°C (250°F). | ||
| Possible Causes: |
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| Diagnostic Aids: | An IAT V PID reading less than 0.2 volt with ignition ON engine OFF or during any engine operating mode indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test DA . | ||
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.