AutoCodes – GMC – U184E 2018 GMC Sierra

U184E 2018 GMC Sierra Code - Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low 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 Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted, Inflatable Restraint Sensing and Diagnostic 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: U184E 2018 GMC Sierra indicates Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus.
Common causes: Common causes include Faulty Inflatable Restraint Sensing and Diagnostic Module, Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted, Inflatable Restraint Sensing and Diagnostic 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 296

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 Jul 24, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U184E 2018 GMC Sierra 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 Codes (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 health message, detect its absence; those devices in turn set a DTC associated with the loss of 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.

OBDII Code U184E 2018 GMC Sierra - Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus - AutoCodes.com — U184E 2018 GMC Sierra Code - Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U184E 2018 GMC Sierra?

Faulty Inflatable Restraint Sensing and Diagnostic Module
Inflatable Restraint Sensing and Diagnostic Module harness is open or shorted
Inflatable Restraint Sensing and Diagnostic Module circuit poor electrical connection

How to Fix the DTC U184E 2018 GMC Sierra?

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 U184E 2018 GMC Sierra 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 U184E 2018 GMC Sierra code?

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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 U184E 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code U184E on a 2018 GMC Sierra?

The common symptoms include the airbag warning light illuminating on the dashboard, loss of communication with the inflatable restraint system, and potential issues with airbag deployment.

2. What does the OBDII code U184E indicating "Lost Communication with Inflatable Restraint Sensing and Diagnostic Module on Low Speed CAN Bus" mean for a 2018 GMC Sierra?

This code indicates a communication problem between the vehicle's onboard diagnostic system and the inflatable restraint module responsible for the airbag system on the low-speed CAN bus network.

3. What are the possible causes of OBDII code U184E on a 2018 GMC Sierra?

Possible causes include wiring issues, a faulty inflatable restraint sensing and diagnostic module, a malfunctioning CAN bus communication network, or a problem with the vehicle's electronic control module.

4. How can I diagnose the OBDII code U184E on a 2018 GMC Sierra?

Diagnosis typically involves checking the wiring connections, inspecting the inflatable restraint module for damage, testing the CAN bus communication network, and using a diagnostic scanner to retrieve additional fault codes and data.

5. How can I repair OBDII code U184E on a 2018 GMC Sierra?

Repair may involve repairing or replacing damaged wiring, replacing the inflatable restraint module if it's faulty, ensuring proper connections, and resetting the system using a diagnostic scanner after addressing the underlying issue.

6. Is it safe to drive with OBDII code U184E present on a 2018 GMC Sierra?

It is not recommended to drive with this code present, as it indicates a potential problem with the airbag system, which is crucial for occupant safety in the event of a collision.

7. Can I reset the OBDII code U184E on a 2018 GMC Sierra by disconnecting the battery?

While disconnecting the battery may clear the code temporarily, it's essential to diagnose and repair the underlying issue causing the code to prevent it from reoccurring and ensure the proper functioning of the airbag system.

8. How much does it typically cost to repair OBDII code U184E on a 2018 GMC Sierra?

The cost of repair can vary depending on the specific cause of the code and whether it requires simple wiring repairs, module replacement, or other extensive diagnostic and repair work. It's recommended to consult a professional for an accurate estimate.

9. Can a DIY enthusiast without advanced automotive knowledge fix OBDII code U184E on a 2018 GMC Sierra?

While some basic troubleshooting like checking connections and fuses can be done by a DIY enthusiast, diagnosing and repairing complex issues related to the airbag system and CAN bus network may require specialized tools and expertise best handled by a professional.

10. How often does OBDII code U184E occur in a 2018 GMC Sierra?

The occurrence of this specific code can vary depending on the vehicle's usage, maintenance history, and environmental factors. If the code appears, it should be addressed promptly to ensure the proper functioning of the airbag system.