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.
2004 Lincoln Town Car Protection SeriesFACTORY OEM SERVICE PROCEDURE
Navigation System DTCS
NAVIGATION SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| B2204 | GPS Antenna Connection Open or Short | Navigation System Module | Go To PINPOINT TEST B: NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY -- NO GLOBAL POSITIONING SYSTEM (GPS) ANTENNA SIGNAL . |
| B2208 | Navigation to Head Unit Communication Error | Navigation System Module | Go To PINPOINT TEST I: NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY -- THE AUDIO UNIT IS INOPERATIVE . |
| B2633 | Driver - Front Microphone Circuit Failure | Navigation System Module | Go To PINPOINT TEST J: DTC B2633 DRIVER -- FRONT MICROPHONE CIRCUIT FAILURE . |
| C1192 | Vehicle Speed Circuit Failure | Navigation System Module | Go To PINPOINT TEST C: NAVIGATION SYSTEM DOES NOT OPERATE CORRECTLY -- THE POSITION CURSOR IS INOPERATIVE . |
| U1016 | SCP Invalid Data (PCM) | Navigation System Module | Go To PINPOINT TEST K: DTC U1016 -- SCP INVALID DATA . |
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.