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U2179 Cadillac Code - Lost Communication With Television Module

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Television Module, Television Module harness is open or shorted, Television 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: U2179 Cadillac indicates Lost Communication With Television Module.
Common causes: Common causes include Faulty Television Module, Television Module harness is open or shorted, Television 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 864

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 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2179 Cadillac Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2179 Cadillac - Lost Communication With Television Module - AutoCodes.com — U2179 Cadillac Code - Lost Communication With Television Module

What does this mean?

What are the Possible Causes of the DTC U2179 Cadillac?

Faulty Television Module
Television Module harness is open or shorted
Television Module circuit poor electrical connection

How to Fix the DTC U2179 Cadillac?

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 U2179 Cadillac 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 U2179 Cadillac Code

1. What are the common symptoms of OBDII code U2179 in a Cadillac related to Lost Communication With Television Module?

- Common symptoms include the loss of display or control functions related to the television module in the vehicle's entertainment system.

2. What are the possible causes for OBDII code U2179 in a Cadillac?

- Causes can include faulty wiring connections, a defective television module, communication network issues, or a malfunction in the control module.

3. How can I diagnose the issue causing OBDII code U2179 in my Cadillac?

- Diagnosis typically involves conducting a thorough inspection of wiring connections, checking for loose or damaged wires, and using a diagnostic scan tool to pinpoint the exact source of the communication loss.

4. Can a DIY enthusiast repair OBDII code U2179 related to Lost Communication With Television Module in a Cadillac?

- While some basic troubleshooting steps can be taken, advanced repairs may require specialized tools and expertise. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

5. Are there any specific repair tips for resolving OBDII code U2179 in a Cadillac?

- Repair tips may include checking and repairing damaged wiring, ensuring proper connections, resetting the affected modules, or replacing the faulty television module if necessary.

6. What are the potential risks of ignoring OBDII code U2179 in a Cadillac?

- Ignoring the issue may lead to a complete loss of functionality in the television module, affecting entertainment features and potentially causing further damage to the vehicle's communication network.

7. Is it safe to continue driving with OBDII code U2179 triggered in a Cadillac?

- While the vehicle may still be operational, it is advisable to address the underlying issue promptly to prevent any potential complications or further damage to the vehicle's systems.

8. How long does it typically take to repair OBDII code U2179 related to Lost Communication With Television Module in a Cadillac?

- Repair times can vary depending on the root cause of the issue. Simple fixes like reconnecting loose wires may take less time, while complex repairs involving module replacements could require more extensive work.

9. Can extreme weather conditions impact the triggering of OBDII code U2179 in a Cadillac?

- Extreme weather conditions, such as temperature fluctuations or moisture exposure, can potentially affect the electrical components and wiring connections, leading to communication issues and triggering the code.

10. Are there any software updates or recalls related to OBDII code U2179 in Cadillac vehicles?

- Checking with a Cadillac dealership or the manufacturer's official website can provide information on any software updates, recalls, or technical service bulletins related to this specific OBDII code and its associated concerns.