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)QUICK LOOKUPSDTC INDEXENGINE COOLING DTCS
2009 Mercury Milan Premier, 3.0 1, AWD
Engine Cooling DTCS
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Engine Cooling DTCS
PCM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Perform Test |
|---|---|---|
| P0217 | Engine Coolant Overtemperature Condition | Go to Pinpoint Test B . |
| P1285 | Cylinder Head Overtemperature Condition | Go to Pinpoint Test B . |
| P1299 | Cylinder Head Overtemperature Protection Active | Go to Pinpoint Test B . |
| P0125 | Insufficient Coolant Temp For Closed Loop Fuel Control | Go to Pinpoint Test C . |
| P0128 | Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature) | Go to Pinpoint Test C . |
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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.