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.
2007 Ford Expedition RWDFACTORY OEM SERVICE PROCEDURE
MULTIFUNCTION Electronic Modules DTCS
SMART JUNCTION BOX (SJB) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description | Perform Test |
|---|---|---|
| B106E | Solid State Driver Disabled Due to Short Circuit | Go to Pinpoint Test A . |
| B106F | Module Disabled Due to External Fault | Go to Pinpoint Test A . |
| B2048 | Left Rear Turn Lamp Circuit Short to Ground | Go to Pinpoint Test B . |
| B2050 | Right Rear Turn Lamp Circuit Short to Ground | Go to Pinpoint Test B . |
| B2949 | Global Opening/Closing Circuit Short to Battery | Go to Pinpoint Test B . |
| B2A2B | Left Corner Lamp Output Circuit Short to Ground | Go to Pinpoint Test B . |
| B2A2C | Right Corner Lamp Output Circuit Short to Ground | Go to Pinpoint Test B . |
| B2A38 | Floor Lamp Output Circuit Short to Ground | Go to Pinpoint Test B . |
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.