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.
2003 Ford Windstar BaseFACTORY OEM SERVICE PROCEDURE
Horn Systems DTCS
FRONT ELECTRONIC MODULE (FEM) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action/Go to |
|---|---|---|---|
| B1342 | ECU is Defective | FEM | INSTALL a new FEM. Refer to MULTIFUNCTION ELECTRONIC MODULE . REPEAT the self-test. CLEAR the DTCs. |
| B2496 | Anti-Theft Horn Output Circuit Short to Gnd | FEM | Refer to ANTI-THEFT - PERIMETER . |
| B2511 | Horn Output Relay Circuit Short to Battery | FEM | PINPOINT TEST A |
| B2595 | Anti-Theft Input Signal Circuit Failure | FEM | Refer to ANTI-THEFT - PERIMETER . |
Factory Service Tools
Use the Manual With the Right Hardware
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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.