AutoCodes – Mercury – B1409 Mercury

B1409 Mercury Code - Driver Power Window Up 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: B1409 Mercury indicates Driver Power Window Up 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 812

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1409 Mercury 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 B1409 Mercury - Driver Power Window Up Circuit Short To Ground - AutoCodes.com — B1409 Mercury Code - Driver Power Window Up Circuit Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1409 Mercury?

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 B1409 Mercury?

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 B1409 Mercury 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.

Need more information about the B1409 Mercury code?

Need more information on how to fix the B1409 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1409 Mercury 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 B1409 Mercury Code

1. What are the common symptoms of OBDII code B1409 in a Mercury related to the driver power window circuit?

Symptoms may include the inability to operate the driver's power window, the window getting stuck in one position, or erratic window operation.

2. What does the OBDII code B1409 indicating a driver power window up circuit short to ground mean in a Mercury?

This code suggests that there is a short circuit to ground in the driver power window up circuit of the vehicle.

3. What are some possible causes of OBDII code B1409 in a Mercury?

Potential causes include damaged wiring or connectors in the power window circuit, a malfunctioning power window switch, or a faulty window motor.

4. How can I diagnose the issue causing OBDII code B1409 in my Mercury?

You can start by visually inspecting the wiring and connectors in the driver power window circuit, checking the power window switch for proper operation, and testing the window motor for functionality.

5. Is it safe to continue driving my Mercury with OBDII code B1409 related to the driver power window circuit?

It is not recommended to drive the vehicle with this issue, as it may lead to further damage or safety concerns if the power window becomes inoperable.

6. Can I repair OBDII code B1409 in my Mercury myself?

Depending on your skills and experience with automotive repairs, you may be able to address this issue yourself by repairing or replacing damaged wiring, connectors, switches, or the window motor.

7. How much does it typically cost to fix OBDII code B1409 in a Mercury at a repair shop?

The cost of repairs can vary depending on the extent of the damage and the specific components that need to be repaired or replaced. It's best to consult with a professional for an accurate estimate.

8. Are there any preventive measures I can take to avoid encountering OBDII code B1409 in my Mercury in the future?

Regularly inspecting and maintaining the power window system, avoiding putting excessive strain on the window motor, and addressing any issues promptly can help prevent this code from appearing.

9. Can OBDII code B1409 in a Mercury be related to other power window issues?

While B1409 specifically points to a short to ground in the driver power window up circuit, it's essential to address any related power window problems to ensure the overall functionality and safety of the system.

10. How urgent is it to address OBDII code B1409 in a Mercury once it appears?

It is recommended to address this issue as soon as possible to prevent further damage to the power window system and ensure the driver's ability to operate the window safely and effectively.