AutoCodes – Honda – B1140 Honda

B1140 Honda Code - Driver Side Power Window Position Detect Circuit Error

Quick Answer

The Door Multiplex Control Unit monitors the Driver Side Power Window Position. Common causes include Faulty Power Window Master Switch, Power Window Master Switch harness is open or shorted, Power Window Master Switch circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1140 Honda indicates Driver Side Power Window Position Detect Circuit Error.
Common causes: Common causes include Faulty Power Window Master Switch, Power Window Master Switch harness is open or shorted, Power Window Master Switch circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 17,460

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1140 Honda Description

The Door Multiplex Control Unit monitors the Driver Side Power Window Position. The Door Multiplex Control Unit sets the OBDII code when the Driver Side Power Window Position is not to factory specifications.

OBDII Code B1140 Honda - Driver Side Power Window Position Detect Circuit Error - AutoCodes.com — B1140 Honda Code - Driver Side Power Window Position Detect Circuit Error

What does this mean?

What are the Possible Causes of the DTC B1140 Honda?

Faulty Power Window Master Switch
Power Window Master Switch harness is open or shorted
Power Window Master Switch circuit poor electrical connection
Faulty Door Multiplex Control Unit

How to Fix the DTC B1140 Honda?

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 B1140 Honda 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 B1140 Honda code?

Need more information on how to fix the B1140 Honda code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1140 Honda 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 B1140 Honda Code

1. What are the common symptoms of OBDII code B1140 in a Honda related to the Driver Side Power Window Position Detect Circuit Error?

The common symptoms include the driver side power window not functioning correctly or getting stuck in a specific position.

2. What are the possible causes of the B1140 code in a Honda?

Possible causes of the B1140 code include a malfunctioning power window motor, a faulty window regulator, damaged wiring, or a defective window control switch.

3. How can I diagnose the Driver Side Power Window Position Detect Circuit Error in my Honda?

Diagnosing the issue involves using an OBDII scanner to retrieve the specific B1140 code, testing the power window motor and regulator for proper function, and checking the wiring and connections for any damage or loose connections.

4. Can I continue driving my Honda with the B1140 code present?

It is not recommended to continue driving the vehicle with the B1140 code present, as it may result in the driver side power window becoming inoperable, leading to safety concerns and potential issues with visibility.

5. How can I repair the Driver Side Power Window Position Detect Circuit Error in my Honda?

Repairing the B1140 code may involve replacing the faulty power window motor, window regulator, or addressing any wiring issues. It is recommended to consult a professional mechanic for an accurate diagnosis and repair.

6. Is it possible to reset the B1140 code in a Honda without fixing the underlying issue?

While you can clear the B1140 code using an OBDII scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring and ensure the proper functioning of the driver side power window.

7. Are there any DIY tips for troubleshooting the B1140 code in a Honda?

DIY troubleshooting tips include checking the power window fuse, testing the window control switch, and inspecting the wiring harness for any visible damage before seeking professional help.

8. How much does it typically cost to repair the B1140 code in a Honda?

The cost of repairing the B1140 code can vary depending on the specific issue causing the error, the parts needed for replacement, and the labor rates of the repair shop. It is advisable to obtain quotes from different mechanics for an accurate estimate.

9. Can extreme weather conditions affect the occurrence of the B1140 code in a Honda?

Extreme weather conditions, such as excessive heat or cold, can potentially exacerbate existing issues with the driver side power window system, leading to the triggering of the B1140 code.

10. Is the B1140 code specific to certain Honda models or years?

The B1140 code related to the Driver Side Power Window Position Detect Circuit Error can be found in various Honda models and years, particularly those equipped with power windows and electronic control systems.