AutoCodes – Ford – U0198 Ford

U0198 Ford Code - Lost Communication With Telematic Control Module

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 Telematic Control Module, Telematic Control Module harness is open or shorted, Telematic Control Module 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: U0198 Ford indicates Lost Communication With Telematic Control Module.
Common causes: Common causes include Faulty Telematic Control Module, Telematic Control Module harness is open or shorted, Telematic Control Module 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 3,059

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 U0198 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 Telematic Control Module has not been received.

OBDII Code U0198 Ford - Lost Communication With Telematic Control Module - AutoCodes.com — U0198 Ford Code - Lost Communication With Telematic Control Module

What does this mean?

What are the Possible Causes of the DTC U0198 Ford?

Faulty Telematic Control Module
Telematic Control Module harness is open or shorted
Telematic Control Module circuit poor electrical connection

How to Fix the DTC U0198 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 U0198 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 U0198 Ford Code

1. What are the common symptoms of OBDII code U0198 in a Ford vehicle?

- Common symptoms include loss of communication with the telematic control module, malfunction indicator light (MIL) illumination, and issues with telematics features.

2. What are the possible causes of the U0198 code in a Ford vehicle?

- Possible causes include a faulty telematic control module, damaged wiring or connectors, software issues, or a communication network problem.

3. How can I diagnose the U0198 code in my Ford vehicle?

- Diagnosis typically involves inspecting the wiring and connectors related to the telematic control module, checking for water damage or corrosion, and using a diagnostic scanner to communicate with the module.

4. Can I still drive my Ford vehicle with the U0198 code present?

- It is generally safe to drive the vehicle with the U0198 code, but it is recommended to address the issue promptly to prevent any potential problems with telematics functionality.

5. How can I repair the U0198 code in my Ford vehicle?

- Repair options may include replacing the telematic control module, repairing damaged wiring or connectors, updating software if necessary, and clearing the trouble codes with a diagnostic tool.

6. Is it possible to reset the U0198 code without fixing the underlying issue?

- While you can clear the code with a diagnostic scanner, it is crucial to address the root cause to prevent the code from reappearing and ensure proper functioning of the telematics system.

7. Are there any DIY tips for troubleshooting the U0198 code in a Ford vehicle?

- DIY tips may include visually inspecting wiring and connectors for damage, ensuring proper connections, and checking for any recent software updates related to the telematic control module.

8. How much does it typically cost to repair the U0198 code in a Ford vehicle?

- The cost of repairing the U0198 code can vary depending on the specific issue, parts needed, labor costs, and whether you choose to address the problem yourself or take it to a professional mechanic.

9. Can a malfunctioning telematic control module cause other issues in my Ford vehicle?

- Yes, a malfunctioning telematic control module can potentially affect other vehicle systems that rely on its communication, so it is essential to address the U0198 code promptly.

10. Is the U0198 code common in Ford vehicles, and are there any recalls related to this issue?

- The U0198 code related to lost communication with the telematic control module can occur in Ford vehicles, but there have been no widespread recalls specifically for this problem as of now.