AutoCodes – Lincoln – B1406 Lincoln

B1406 Lincoln 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 Lincoln 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 1,088

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1406 Lincoln 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 Lincoln - Driver Power Window Down Circuit Short To Ground - AutoCodes.com — B1406 Lincoln Code - Driver Power Window Down Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1406 Lincoln?

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 Lincoln?

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 Lincoln 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?

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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 Lincoln Code

1. What are common symptoms of OBDII code B1406 in a Lincoln related to the driver power window?

The common symptoms include the driver power window being stuck in the down position or not functioning at all.

2. What does the OBDII code B1406 indicate in a Lincoln?

OBDII code B1406 indicates a circuit short to ground in the driver power window system.

3. What are the possible causes of OBDII code B1406 in a Lincoln?

Possible causes include damaged wiring, a faulty power window motor, a malfunctioning window switch, or a short circuit in the system.

4. How can I diagnose the issue causing OBDII code B1406 in my Lincoln?

You can start by visually inspecting the wiring and connections in the driver power window system. Testing the power window motor and switch for proper functionality is also recommended.

5. What are some repair tips for fixing OBDII code B1406 in a Lincoln?

Repair tips may involve repairing or replacing damaged wiring, replacing the power window motor or switch if faulty, and fixing any short circuits in the system.

6. Can I reset the OBDII code B1406 in my Lincoln without fixing the underlying issue?

Resetting the code without addressing the underlying issue will likely result in the code reappearing once the system detects the fault again.

7. Is it safe to continue driving my Lincoln with OBDII code B1406 related to the driver power window issue?

It is not recommended to continue driving the vehicle with a malfunctioning driver power window, as it may pose safety risks and inconvenience.

8. How much does it typically cost to repair OBDII code B1406 in a Lincoln?

The cost of repairs can vary depending on the specific cause of the issue and whether you choose to fix it yourself or seek professional assistance. Costs may include parts and labor.

9. Can OBDII code B1406 in a Lincoln be a recurring issue even after repair?

If the root cause of the issue is not properly addressed during repair, OBDII code B1406 may reoccur. Thorough diagnosis and repair are essential to prevent recurrence.

10. Should I seek help from a professional mechanic for OBDII code B1406 in my Lincoln?

If you are unsure about diagnosing or repairing the driver power window issue related to OBDII code B1406, it is recommended to seek help from a qualified automotive technician to ensure proper resolution.