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.
HVAC Module
2010 Ford Flex SEL, 3.5 C, FWDSECTION HVAC Module
HVAC MODULE DIAGNOSTIC TROUBLE CODES (DTC) LIST
| DTC | Description | Action |
|---|---|---|
| B1C83:12 | Rear Defog Relay: Circuit Short to Battery | GO to PINPOINT TEST H . |
| B1C83:14 | Rear Defog Relay: Circuit Short to Ground or Open | If the rear window does not defrost, GO to PINPOINT TEST H
. If the rear window defrost does not turn off, GO to PINPOINT TEST I . |
| All other DTCs | - | REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES . |
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.