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 MANUALSLINCOLN2011MKZ AWD V6-3.5LREPAIR AND DIAGNOSISBODY AND FRAMESEATSTESTING AND INSPECTIONDIAGNOSTIC TROUBLE CODE TESTS AND ASSOCIATED PROCEDURESHVAC MODULE DTC CHART
2011 Lincoln MKZ AWD V6-3.5L
HVAC Module DTC Chart
2011 Lincoln MKZ AWD V6-3.5LSECTION HVAC Module DTC Chart
Seats
DTC Charts
HVAC Module DTC Chart
NOTE: This module utilizes a 5-character DTC followed by a 2-character failure type code. The failure type code provides information about specific fault conditions such as opens or shorts to ground. Continuous Memory Diagnostic Trouble Codes (CMDTCs) have an additional 2-character DTC status code suffix to assist in determining DTC history.
NOTE: Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the PCM DTC Chart.
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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.