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 Ford Expedition RWDFACTORY OEM SERVICE PROCEDURE
Entertainment System DTCS
AUDIO UNIT DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| B2204 | GPS Antenna Open or Short | Audio Unit | GO to PINPOINT TEST P . |
| B2208 | Navigation To Head Unit Communication Error | Audio Unit | GO to PINPOINT TEST W . |
| B2402 | Audio CD/DJ Thermal Shutdown Fault | Audio Unit | GO to PINPOINT TEST B . |
| B2403 | Audio CD/DJ Internal Fault | Audio Unit | GO to PINPOINT TEST B . |
| B2404 | Audio Steering Wheel Switch Circuit Fault | Audio Unit | GO to PINPOINT TEST J . |
| B2633 | Driver-front Microphone Circuit Failure | Audio Unit | GO to PINPOINT TEST X . |
| B2913 | Audio Subwoofer Not Connected | Audio Unit | GO to PINPOINT TEST G . |
| U2003 | Audio Compact Disc/Disc Jockey is Not Responding | Audio Unit | If equipped with a remote CD changer, GO to PINPOINT TEST B
. Otherwise, CLEAR the DTCs. DISREGARD DTC U2005. |
| U2005 | Audio Rear Seat Controller Unit is Not Responding | Audio Unit |
NOTE:
U2005 is retrieved if the rear auxiliary audio controls are not present, disconnected or inoperative. If equipped with rear auxiliary audio controls, GO to PINPOINT TEST H
.Otherwise, CLEAR the DTCs. DISREGARD DTC U2005. |
| U2014 | Audio Subwoofer Unit is Not Responding | Audio Unit | If equipped with a subwoofer, GO to PINPOINT TEST G
. Otherwise, CLEAR the DTCs. DISREGARD DTC U2014. |
| U2026 | Family Entertainment System is Not Responding | Audio>Audio Unit | If equipped with a digital versatile disc (DVD) player, GO to PINPOINT TEST K
. Otherwise, CLEAR the DTCs. DISREGARD DTC U2026. |
NAVIGATION MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Source | Perform Test |
|---|---|---|---|
| B2204 | GPS Antenna Connection Open or Short | Navigation Module | GO to PINPOINT TEST P . |
| B2208 | Navigation to Head Unit Communication Error | Navigation Module | GO to PINPOINT TEST W . |
| B2633 | Driver - Front Microphone Circuit Failure | Navigation Module | GO to PINPOINT TEST X . |
| C1192 | Vehicle Speed Circuit Failure | Navigation Module | GO to PINPOINT TEST Q . |
| U1016 | SCP Invalid Data (PCM) | Navigation Module | GO to PINPOINT TEST Y . |
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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