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 DTC Chart
2009 Ford Fusion SEL, 3.0 1, FWDSECTION HVAC Module DTC Chart
WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Some PCM DTCs may inhibit A/C operation. If any PCM DTCs are retrieved, diagnose those first. Refer to the Introduction - Gasoline Engines
article.
HVAC MODULE DTC CHART
| DTC | Description | Action to Take |
|---|---|---|
| B1249 | Blend Door Failure | Go to Pinpoint Test A . |
| B1251 | In-Vehicle Temperature Sensor Open Circuit | Go to Pinpoint Test B . |
| B1253 | In-Vehicle Temperature Sensor Short to Ground | Go to Pinpoint Test B . |
| B1255 | Ambient Temperature Sensor Open Circuit | Go to Pinpoint Test C . |
| B1257 | Ambient Temperature Sensor Short to Ground | Go to Pinpoint Test C . |
| B1259 | Solar Radiation Sensor Circuit Open | Go to Pinpoint Test D . |
| B1261 | Solar Radiation Sensor Circuit Short to Ground | Go to Pinpoint Test D . |
| U1073 | SCP Invalid or Missing Data for Engine Coolant | If DTCs are present in the instrument cluster, diagnose those codes first. CLEAR the DTCs. If the HVAC DTC returns, INSTALL a new HVAC module. REFER to CLIMATE CONTROL
article. TEST the system for normal operation. If no DTCs are present in the instrument cluster, CLEAR the DTCs. If the HVAC module DTC returns, INSTALL a new HVAC module. REFER to CLIMATE CONTROL article. TEST the system for normal operation. |
| U1341 | SCP Invalid or Missing Data for Function Read Vehicle Speed | REFER to the Introduction - Gasoline Engines article. |
| All Other DTCs | - | REFER to the Master DTC Chart in MULTIFUNCTION ELECTRONIC MODULES article. |
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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.