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.
2019 Lincoln MKT BaseFACTORY OEM SERVICE PROCEDURE
Driver Door Module (DDM)
Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Service Information for information about these diagnostic practices.
| DTC | Description | Action |
|---|---|---|
| B1667 | Mirror Driver Up/Down Motor Stalled | GO to Pinpoint Test A . |
| B1668 | Mirror Driver Right/Left Motor Stalled | GO to Pinpoint Test A . |
| B1733 | Mirror Driver Vertical Switch Circuit Failure | GO to Pinpoint Test A . |
| B1737 | Mirror Driver Horizontal Switch Circuit Failure | GO to Pinpoint Test A . |
| B1741 | Mirror Passenger Vertical Switch Circuit Failure | GO to Pinpoint Test A . |
| B1745 | Mirror Passenger Horizontal Switch Circuit Failure | GO to Pinpoint Test A . |
| B2223 | Mirror Driver Drive Circuit Failure | GO to Pinpoint Test A . |
| B2320 | Mirror Driver Horizontal Feedback Potentiometer Circuit Failure | GO to Pinpoint Test A . |
| B2322 | Mirror Driver Horizontal Feedback Potentiometer Circuit Short to Battery | GO to Pinpoint Test A . |
| B2324 | Mirror Driver Vertical Feedback Potentiometer Circuit Failure | GO to Pinpoint Test A . |
| B2326 | Mirror Driver Vertical Feedback Potentiometer Circuit Short to Battery | GO to Pinpoint Test A . |
| All Other DTCs | - | REFER to Handles, Locks, Latches and Entry Systems . |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.