AutoCodes – Ford – U0199 Ford

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

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Door Control Module 'A', Door Control Module 'A' harness is open or shorted, Door Control Module 'A' 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: U0199 Ford indicates Lost Communication With Door Control Module 'A'.
Common causes: Common causes include Faulty Door Control Module 'A', Door Control Module 'A' harness is open or shorted, Door Control Module 'A' 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 3,459

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 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0199 Ford Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Door Control Module 'A' has not been received.

OBDII Code U0199 Ford - Lost Communication With Door Control Module 'A' - AutoCodes.com — U0199 Ford Code - Lost Communication With Door Control Module 'A'

What does this mean?

What are the Possible Causes of the DTC U0199 Ford?

Faulty Door Control Module 'A'
Door Control Module 'A' harness is open or shorted
Door Control Module 'A' circuit poor electrical connection

How to Fix the DTC U0199 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0199 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 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.