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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 980 (ENGINE CONTROLS - POWERTRAIN DTC CHARTS AND DESCRIPTIONS (EXCEPT DIESEL & HYBRID))DTC DIAGNOSISP1640 - POWERTRAIN DTCS AVAILABLE IN ANOTHER MODULE
2009 Mercury Milan Premier, 3.0 1, AWD
P1640 - Powertrain DTCS Available In Another Module
2009 Mercury Milan Premier, 3.0 1, AWDSECTION P1640 - Powertrain DTCS Available In Another Module
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2008 Mercury Sable, 2008 Mercury Mountaineer, 2008 Mercury Milan, 2008 Mercury Mariner, and 2008 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.
P1640 - POWERTRAIN DTCS AVAILABLE IN ANOTHER MODULE
| Description: | Vehicles using a secondary engine control module can request that the powertrain control module (PCM) illuminates the malfunction indicator lamp (MIL) when a failure occurs which affects emissions. | |||
| Possible Causes: |
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| Diagnostic Aids: | ||||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | Refer to the Description, Possible Causes and Diagnostic Aids for the DTC. | |||
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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.