AutoCodes – Generic – U183A

U183A Code - Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus

Quick Answer

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Common causes include Faulty Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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: U183A indicates Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus.
Common causes: Common causes include Faulty Telematics Communication Interface Control Module, Telematics Communication Interface Control Module harness is open or shorted, Telematics Communication Interface 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 4,138

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 Jun 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U183A Description

The serial data circuit is the means by which the devices in the vehicle communicate with each other. Once the scan tool is connected to the serial data circuit through the Data Link Connector (DLC), the scan tool can be used to monitor each device for diagnostic purposes and to check for Diagnostic Trouble Code (DTC). When the vehicle is ON, each device communicating on the serial data circuit sends a state of health message to ensure that the device is operating properly. When a device stops communicating on the serial data circuit, for example, if the device loses power or ground, the state of health message it normally sends on the serial data circuit disappears. Other devices on the serial data circuit, which expect to receive that state of the health message, detect its absence; those devices in turn set a DTC associated with the loss of the state of health of the non-communicating device. A loss of serial data communications DTC does not represent a failure of the devices that contain the stored DTC. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U183A - Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus - AutoCodes.com — U183A Code - Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U183A?

Faulty Telematics Communication Interface Control Module
Telematics Communication Interface Control Module harness is open or shorted
Telematics Communication Interface Control Module circuit poor electrical connection

How to Fix the DTC U183A?

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 U183A 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 U183A code?

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Information for Specific Makes

U183A Buick — Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus
U183A Cadillac — Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus
U183A Chevrolet — Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus
U183A GMC — Lost Communication With Telematics Communication Interface Control Module On High Speed CAN Bus

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 U183A Code

1. What are common symptoms of OBDII code U183A?

- Common symptoms include the malfunction indicator light (MIL) illuminated on the dashboard, issues with the telematics system, loss of communication with the vehicle's control modules, and potential loss of data and functionality related to the telematics system.

2. What can cause the OBDII code U183A to trigger?

- The code U183A is typically triggered when there is a communication failure between the telematics communication interface control module and the high-speed Controller Area Network (CAN) bus. This can be caused by wiring issues, a faulty control module, software glitches, or other electrical problems.

3. How can I diagnose the cause of OBDII code U183A?

- Diagnosing code U183A requires using a professional OBDII scanner to retrieve the fault codes and accessing the telematics communication interface control module for testing. Checking the wiring connections, inspecting for physical damage, and conducting a thorough system analysis can help pinpoint the cause.

4. What are the potential repair options for OBDII code U183A?

- Repair options for code U183A may include repairing or replacing damaged wiring, reprogramming the control module, replacing the telematics communication interface control module, or performing software updates to address communication issues.

5. Can OBDII code U183A be fixed at home, or do I need a professional mechanic?

- Fixing OBDII code U183A may require advanced diagnostic tools and technical knowledge, so it is recommended to consult a professional mechanic or technician with experience in diagnosing and repairing communication interface control module issues.

6. Is it safe to continue driving with OBDII code U183A present?

- It is generally not recommended to continue driving with unresolved OBDII codes like U183A, as it can lead to potential safety hazards, further damage to the vehicle's systems, and may result in the vehicle not passing emissions tests.

7. Can a dead battery cause OBDII code U183A to appear?

- While a dead or low battery can sometimes cause communication errors in a vehicle, it is not a common direct cause of OBDII code U183A. However, ensuring the battery is in good condition and properly charged is always a good practice for overall vehicle health.

8. How long does it typically take to repair OBDII code U183A?

- The repair time for OBDII code U183A can vary depending on the exact cause of the issue, the availability of replacement parts, and the complexity of the repair. It may take anywhere from a few hours to a full day or more to diagnose and fix the problem.

9. Are there any recalls or technical service bulletins related to OBDII code U183A?

- It is recommended to check with the vehicle manufacturer or authorized dealerships for any recalls or technical service bulletins related to OBDII code U183A, as there may be specific repair procedures or updates available for affected vehicles.

10. How can I prevent OBDII code U183A from occurring in the future?

- To help prevent OBDII code U183A from occurring in the future, it is essential to perform regular maintenance, keep the vehicle's electrical system in good condition, avoid water damage to electronic components, and address any communication issues promptly to maintain a healthy vehicle network.