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 MANUALSMERCURY2011MARINER PREMIER, 2.5 7, AWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS - DTC P0001 THROUGH DTC P0217 - (EXCEPT DIESEL & HYBRID)DTC P009A: INTAKE AIR TEMPERATURE/AMBIENT AIR TEMPERATURE CORRELATION
2011 Mercury Mariner Premier, 2.5 7, AWD
DTC P009A: Intake Air Temperature/Ambient Air Temperature Correlation
2011 Mercury Mariner Premier, 2.5 7, AWDSECTION DTC P009A: Intake Air Temperature/Ambient Air Temperature Correlation
P009A - INTAKE AIR TEMPERATURE/AMBIENT AIR TEMPERATURE CORRELATION
| Description: | The DTC indicates that the intake air temperature (IAT) and ambient air temperature (AAT) sensor readings differ by greater than a calibrated value. | ||
| Possible Causes: |
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| Diagnostic Aids: | Make sure the IAT, AAT and engine coolant temperature (ECT) sensor readings are within 18°C (32.4°F) of each other after 6 to 8 hours at a stabilized ambient temperature. | ||
| 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.