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U0199 Ford Code - Lost Communication With Door Control Module 'A'

Quick Answer

The U0199 diagnostic trouble code (DTC) for Ford vehicles indicates that there is a communication problem between the vehicle's main computer system and the door control module 'A'. Common causes include Faulty wiring or connectors, Defective door control module 'A', Malfunctioning main computer system. 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
U0199 Ford indicates Lost Communication With Door Control Module 'A'.
Common causes
Common causes include Faulty wiring or connectors, Defective door control module 'A', Malfunctioning main computer system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code U0199 Ford Description

The U0199 diagnostic trouble code (DTC) for Ford vehicles indicates that there is a communication problem between the vehicle's main computer system and the door control module 'A'. The door control module 'A' is responsible for managing various functions related to the vehicle's doors, such as power windows, door locks, and interior lights. When communication is lost with this module, it can lead to issues with the proper operation of these components.

OBDII Code U0199 Ford - Lost Communication With Door Control Module 'A'
U0199 Ford Code - Lost Communication With Door Control Module 'A'

Common Causes of U0199 Ford

  1. Faulty wiring or connectors
  2. Defective door control module 'A'
  3. Malfunctioning main computer system
  4. Software glitches in the vehicle's control modules
  5. Water damage or corrosion in the electrical components

Symptoms of U0199 Ford

  1. Power windows not operating correctly
  2. Door locks malfunctioning
  3. Interior lights not turning on or off as expected
  4. Warning light on the dashboard indicating a communication error

How to Fix U0199 Ford

  1. Perform a diagnostic scan to retrieve the DTC and pinpoint the source of the communication issue.
  2. Inspect the wiring and connectors for any signs of damage or corrosion, repairing or replacing as needed.
  3. Test the door control module 'A' for proper functionality and replace if found to be faulty.
  4. Check the main computer system for any software glitches or malfunctions, resetting or reprogramming as necessary.
  5. Clear the DTC and perform a final test to ensure proper communication between the modules.

Cost to Fix U0199 Ford

The cost of repairing a lost communication issue with the door control module 'A' on a Ford vehicle can vary depending on the specific cause of the problem and the labor rates in your area. In general, you can expect to pay anywhere from $150 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to obtain quotes from multiple sources to get an accurate estimate for your particular situation.

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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 U0199 Ford Code

1. What are common symptoms of the U0199 OBDII code for a Ford vehicle?

- Common symptoms include power door lock issues, interior lights not working, and difficulty controlling windows or mirrors.

2. What can cause the U0199 OBDII code to appear in a Ford vehicle?

- The U0199 code is typically triggered by a communication breakdown between the vehicle's main computer and the door control module 'A', which can be caused by wiring issues, a faulty module, or a loose connection.

3. How serious is the U0199 OBDII code in a Ford vehicle?

- While the U0199 code may not affect the drivability of the vehicle, it can lead to inconvenience and potential safety concerns if door-related functions are compromised.

4. How can I diagnose the U0199 OBDII code in my Ford vehicle?

- To diagnose the U0199 code, a scan tool can be used to communicate with the vehicle's computer and determine the specific issue with the door control module 'A'.

5. Is it safe to continue driving with the U0199 OBDII code in a Ford vehicle?

- It is generally safe to drive with the U0199 code, but it is recommended to address the issue promptly to avoid potential door control malfunctions.

6. Can I repair the U0199 OBDII code in my Ford vehicle myself?

- Depending on your level of automotive expertise, you may be able to repair the U0199 code yourself by checking for loose connections, inspecting wiring, or replacing the door control module 'A'.

7. How much does it cost to repair the U0199 OBDII code in a Ford vehicle?

- The cost of repairing the U0199 code can vary depending on the underlying cause, but it may involve replacing the door control module 'A', which can range from $200 to $500 including parts and labor.

8. Are there any preventive measures to avoid the U0199 OBDII code in a Ford vehicle?

- Regularly checking the condition of your vehicle's wiring harnesses, ensuring proper connections, and addressing any electrical issues promptly can help prevent the U0199 code from appearing.

9. Can the U0199 OBDII code affect other systems in a Ford vehicle?

- While the U0199 code is specific to the communication with the door control module 'A', it may indicate broader electrical issues that could potentially impact other vehicle systems.

10. How long does it typically take to repair the U0199 OBDII code in a Ford vehicle?

- The repair time for the U0199 code can vary depending on the exact cause and complexity of the issue, but it may take a few hours to a full day to diagnose and fix the problem.

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