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.
2005 Lincoln Aviator RWDFACTORY OEM SERVICE PROCEDURE
Navigation System DTCS
NAVIGATION SYSTEM MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Action |
|---|---|---|---|
| B1342 | ECU is Defective | Navigation System Module | CLEAR the DTCs. RETRIEVE the DTCs. If DTC B1342 is retrieved again, INSTALL a new navigation system module. REFER to NAVIGATION SYSTEM MODULE . CLEAR the DTCs. REPEAT the self-test. |
| B1627 | PRNDL Reverse Input Circuit Failure | Navigation System Module | GO to PINPOINT TEST J . |
| B2139 | Data Mismatch | Navigation System Module | CLEAR the DTCs. REPEAT the self-test. If DTC B2139 is retrieved again, REMOVE the navigation system module and send it to an authorized audio system repair facility. REFER to NAVIGATION SYSTEM MODULE . CLEAR the DTCs. REPEAT the self-test. |
| B2204 | GPS Antenna Connection Open or Short | Navigation System Module | GO to PINPOINT TEST B . |
| B2208 | Navigation to Head Unit Communication Error | Navigation System Module | GO to PINPOINT TEST I . |
| B2477 | Module Configuration Failure | Navigation System Module | CHECK the navigation system module configuration. REFER to MODULE CONFIGURATION . |
| B2633 | Driver-Front Microphone Circuit Failure | Navigation System Module | GO to PINPOINT TEST K . |
| B2858 | Satellite ECU is Defective | Navigation System Module | CLEAR the DTCs. REPEAT the self-test. If DTC B2858 is retrieved again, REMOVE the audio unit and SEND it to an authorized audio system repair facility. REFER to AUDIO UNIT . |
| C1192 | Vehicle Speed Circuit Failure | Navigation System Module | GO to PINPOINT TEST C . |
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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