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.
2006 Lincoln LSFACTORY OEM SERVICE PROCEDURE
Navigation System DTCS
NAVIGATION SYSTEM MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action |
|---|---|---|---|
| B1342 | ECU is Defective | Navigation Module | CLEAR the DTCs. REPEAT the self-test. If DTC B1342 is retrieved again, INSTALL a new navigation module. REFER to NAVIGATION MODULE . CLEAR the DTCs. REPEAT the self-test. |
| B2103 | Antenna Not Connected | Navigation System Module | Go To PINPOINT TEST C . |
| B2139 | Data Mismatch | Navigation Module | CLEAR the DTCs. REPEAT the self-test. If DTC B2139 is retrieved again, REMOVE the navigation module. REFER to NAVIGATION MODULE . SEND it to an authorized repair facility. CLEAR the DTCs. REPEAT the self-test. |
| B2204 | GPS Antenna Connection Open or Short | Navigation Module | Go To PINPOINT TEST K . |
| B2208 | Navigation to Head Unit Communication Error | Navigation Module | Go To PINPOINT TEST R . |
| B2403 | Audio CDDJ Internal Fault | Navigation System Module | REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation after the repair. |
| B2404 | Audio Steering Wheel Switch Circuit Fault | Navigation System Module | Go To PINPOINT TEST H . |
| B2477 | Module Configuration Failure | Navigation Module | CHECK the navigation module configuration. REFER to MODULE CONFIGURATION . |
| B2633 | Driver - Front Microphone Circuit Failure | Navigation Module | Go To PINPOINT TEST S . |
| B2858 | Audio Unit Is Defective | Navigation System Module | REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . TEST the system for normal operation after the repair. |
| B2913 | Subwoofer Not Connected | Navigation System Module | Go To PINPOINT TEST G . |
| C1192 | Vehicle Speed Circuit Failure | Navigation Module | Go To PINPOINT TEST L . |
| U1016 | SCP Invalid Data (PCM) | Navigation Module | Go To PINPOINT TEST T . |
| All other DTCs | - | Navigation System Module | REFER to MULTIFUNCTION ELECTRONIC MODULES . |
Factory Service Tools
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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.
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