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 P0073: AMBIENT AIR TEMPERATURE SENSOR CIRCUIT HIGH
2011 Mercury Mariner Premier, 2.5 7, AWD
DTC P0073: Ambient Air Temperature Sensor Circuit High
2011 Mercury Mariner Premier, 2.5 7, AWDSECTION DTC P0073: Ambient Air Temperature Sensor Circuit High
P0073 - AMBIENT AIR TEMPERATURE SENSOR CIRCUIT HIGH
| Description: | The DTC indicates the sensor signal is greater than the self-test maximum. | ||
| Possible Causes: |
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| Diagnostic Aids: | An AAT sensor reading greater than the self-test maximum 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 FA . | ||
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.