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B1406 Ford Code - Driver Power Window Down Circuit Short To Ground

Quick Answer

The driver power window is controlled by the Front Electronics Module (FEM). Common causes include Driver Power Window Regulator Electric Motor, Faulty Master Window Regulator Control Switch, Faulty Front Electronics Module (FEM). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B1406 Ford indicates Driver Power Window Down Circuit Short To Ground.
Common causes
Common causes include Driver Power Window Regulator Electric Motor, Faulty Master Window Regulator Control Switch, Faulty Front Electronics Module (FEM).
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 1,496
How popular is this code, among other codes? Low
What is this?
Table of contents Created and updated by William Orellana on Apr 04, 2019
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Code B1406 Ford Description

The driver power window is controlled by the Front Electronics Module (FEM). The driver power window regulator control switch and motor are hardwired directly to the FEM. The FEM will read the window regulator control switch actuation and provide the corresponding output to the window motor. If one-touch operation is selected, the FEM powers the driver window motor for seven seconds or until the FEM senses the motor is stalled. If the window track, regulator or glass weatherstrips cause the glass to bind, the FEM may interpret this as a motor stalled condition and halt motor operation.
OBDII Code B1406 Ford - Driver Power Window Down Circuit Short To Ground - AutoCodes.com
B1406 Ford Code - Driver Power Window Down Circuit Short To Ground
What does this mean?

What are the Possible Causes of the DTC B1406 Ford?

  • Driver Power Window Regulator Electric Motor
  • Faulty Master Window Regulator Control Switch
  • Faulty Front Electronics Module (FEM)
  • Master Window Regulator Control Switch harness is open or shorted
  • Master Window Regulator Control Switch circuit poor electrical connection

How to Fix the DTC B1406 Ford?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1406 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

Get the B1406 Ford code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1406 Ford Code

1. What does the OBDII code B1406 mean on a Ford vehicle?

It indicates a short to ground in the driver power window down circuit, meaning there is an electrical fault preventing proper operation of the driver’s window.

2. What are common symptoms of the B1406 code?

The driver’s power window may not roll down, may move erratically, or may operate intermittently.

3. What causes the B1406 code to appear?

Common causes include damaged wiring, a malfunctioning power window switch, a shorted motor, or corroded electrical connections in the driver power window circuit.

4. Can I still drive my Ford with a B1406 code?

Yes, the vehicle is still drivable, but the driver’s power window may not function properly, which could be inconvenient or a safety issue.

5. How do I diagnose a B1406 code on my Ford?

Start by inspecting the wiring and connectors in the driver power window circuit for damage or corrosion. Test the power window switch and motor for proper operation.

6. What tools are needed to fix the B1406 code?

You may need a multimeter, wiring diagrams, basic hand tools, and potentially a replacement switch or motor, depending on the issue.

7. How much does it cost to repair a B1406 code?

Repair costs vary but typically range from $50 to $200, depending on whether you need to replace the switch, motor, or repair wiring.

8. Can a blown fuse cause the B1406 code?

A blown fuse is unlikely to trigger this specific code, but a short circuit in the wiring can cause both a blown fuse and the code to appear.

9. How can I prevent the B1406 code from recurring?

Regularly inspect the wiring and connectors around the driver power window for wear or corrosion and avoid excessive force on the window switch.

10. Is fixing the B1406 code a DIY job?

If you have basic electrical troubleshooting skills and tools, you can attempt the repair. Otherwise, it’s best to consult a professional mechanic.

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