AutoCodes – Ford – B1087 Ford

B1087 Ford Code - Door Module LIN Bus 'A'

Quick Answer

The Driver Door Module (DDM) and Passenger Door Module (PDM) communicate with the corresponding Driver Rear Door Module (DRDM) and Passenger Rear Door Module (PRDM) over a dedicated Local Interconnect Network (LIN). Common causes include Faulty Window Control Switch, Window Control Switch harness is open or shorted, Window Control Switch circuit poor electrical connection. 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: B1087 Ford indicates Door Module LIN Bus 'A'.
Common causes: Common causes include Faulty Window Control Switch, Window Control Switch harness is open or shorted, Window Control Switch circuit poor electrical connection.
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 22,688

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 Nov 18, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1087 Ford Description

The Driver Door Module (DDM) and Passenger Door Module (PDM) communicate with the corresponding Driver Rear Door Module (DRDM) and Passenger Rear Door Module (PRDM) over a dedicated Local Interconnect Network (LIN). The window control on the driver door also provides information to the DDM over the same LIN. In the event of a failure on a LIN, the power windows, power locks, and switch illumination are inoperative in the corresponding rear door. If there is a LIN failure for the DDM, the controls of the window control switch are also inoperative.

OBDII Code B1087 Ford - Door Module LIN Bus 'A' - AutoCodes.com — B1087 Ford Code - Door Module LIN Bus 'A'

What does this mean?

What are the Possible Causes of the DTC B1087 Ford?

Faulty Window Control Switch
Window Control Switch harness is open or shorted
Window Control Switch circuit poor electrical connection
Faulty Driver Door Module (DDM)
Faulty Passenger Door Module (PDM)

How to Fix the DTC B1087 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 does this mean?

Code Tech Notes

B1087:83 LIN Bus 'A' Value Of Signal Protection Calculation Incorrect
B1087:86 LIN Bus 'A' Signal Invalid
B1087:88 LIN Bus 'A' Bus Off

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1087 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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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 B1087 Ford Code

1. What are the common symptoms of OBDII code B1087 in a Ford related to the Door Module LIN Bus 'A'?

- Common symptoms include issues with power door locks, interior lights not working, and malfunctioning windows or mirrors.

2. What can cause the OBDII code B1087 related to the Door Module LIN Bus 'A' in a Ford?

- The code B1087 can be caused by a faulty door module, damaged wiring, loose connections, or a communication error within the LIN bus network.

3. How can I diagnose the OBDII code B1087 Door Module LIN Bus 'A' issue in my Ford?

- To diagnose the issue, you can use a diagnostic scanner to retrieve the specific trouble code, inspect the door module and wiring for any visible damage, and test the LIN bus communication network.

4. Is it safe to continue driving with the OBDII code B1087 related to the Door Module LIN Bus 'A' in a Ford?

- It is generally safe to drive with this code, but it is recommended to address the issue promptly to prevent further electrical problems within the vehicle.

5. Can I repair the OBDII code B1087 Door Module LIN Bus 'A' issue in my Ford myself?

- Depending on your level of automotive expertise, you may be able to repair the issue yourself by checking and repairing any damaged wiring or connections, or by replacing the door module if needed.

6. Will resetting the OBDII code B1087 related to the Door Module LIN Bus 'A' in my Ford fix the problem?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the B1087 code. It's important to diagnose and repair the root cause of the problem.

7. How much does it typically cost to repair the OBDII code B1087 related to the Door Module LIN Bus 'A' in a Ford?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing the door module, repairing wiring, or addressing LIN bus communication problems, which could range from $100 to $500 or more.

8. Can extreme weather conditions affect the occurrence of the OBDII code B1087 Door Module LIN Bus 'A' in a Ford?

- Yes, extreme temperature fluctuations or moisture exposure can potentially impact the door module, wiring, or LIN bus communication, leading to the triggering of the B1087 trouble code.

9. Are there any preventive maintenance steps I can take to avoid the OBDII code B1087 related to the Door Module LIN Bus 'A' in my Ford?

- Regularly inspecting the door module, wiring, and connectors for signs of wear or damage, as well as keeping the vehicle's electrical system well-maintained, can help prevent issues that may trigger the B1087 code.

10. How long does it typically take to repair the OBDII code B1087 related to the Door Module LIN Bus 'A' in a Ford?

- The repair time can vary based on the specific cause of the issue and the complexity of the repair needed. It can range from a quick fix of a loose connection to a more involved process of replacing the door module, taking anywhere from 1 to 4 hours.