AutoCodes – Chevrolet – U184C Chevrolet

U184C Chevrolet Code - Lost Communication with Instrument Cluster 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 Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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: U184C Chevrolet indicates Lost Communication with Instrument Cluster on Low Speed CAN Bus.
Common causes: Common causes include Faulty Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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 1,040

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 U184C Chevrolet 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 U184C Chevrolet - Lost Communication with Instrument Cluster on Low Speed CAN Bus - AutoCodes.com — U184C Chevrolet Code - Lost Communication with Instrument Cluster on Low Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U184C Chevrolet?

Faulty Instrument Cluster
Instrument Cluster harness is open or shorted
Instrument Cluster circuit poor electrical connection

How to Fix the DTC U184C Chevrolet?

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 U184C Chevrolet 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 U184C Chevrolet code?

Need more information on how to fix the U184C Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U184C Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

U184C 2014 Chevrolet Silverado — Lost Communication with Instrument Cluster on Low Speed CAN Bus
U184C 2015 Chevrolet Silverado — Lost Communication with Instrument Cluster on Low Speed CAN Bus
U184C 2016 Chevrolet Silverado — Lost Communication with Instrument Cluster on Low Speed CAN Bus
U184C 2017 Chevrolet Silverado — Lost Communication with Instrument Cluster on Low Speed CAN Bus
U184C 2018 Chevrolet Silverado — Lost Communication with Instrument Cluster on Low 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 U184C Chevrolet Code

1. What are common symptoms of the U184C OBDII code in a Chevrolet related to lost communication with the instrument cluster on the low-speed CAN bus?

- Common symptoms include erratic instrument cluster behavior, non-functioning gauges, warning lights staying on, and loss of communication with the cluster.

2. What are possible causes of the U184C code in a Chevrolet indicating a communication issue with the instrument cluster on the low-speed CAN bus?

- Possible causes include damaged wiring or connectors, a faulty instrument cluster module, a malfunctioning CAN bus network, or a problem with the power or ground connections.

3. How can I diagnose the U184C code in a Chevrolet related to lost communication with the instrument cluster on the low-speed CAN bus?

- To diagnose this issue, you can perform a visual inspection of the wiring and connectors, check for any loose connections, use a diagnostic scanner to read the trouble codes, and perform tests to identify the specific cause.

4. What are some repair tips for fixing the U184C code in a Chevrolet due to communication problems with the instrument cluster on the low-speed CAN bus?

- Repair tips include checking and repairing any damaged wiring, replacing faulty connectors, testing the instrument cluster module, ensuring proper power and ground connections, and reprogramming modules if necessary.

5. Can the U184C code in a Chevrolet related to lost communication with the instrument cluster on the low-speed CAN bus be fixed without professional help?

- While some basic checks and repairs can be done by DIY enthusiasts, diagnosing and fixing complex communication issues may require professional diagnostic tools and expertise.

6. Is it safe to drive a Chevrolet with the U184C code indicating lost communication with the instrument cluster on the low-speed CAN bus?

- It is not recommended to drive the vehicle with this issue as it may lead to inaccurate gauges, potential safety hazards, and further damage to the vehicle's systems.

7. How much does it typically cost to repair the U184C OBDII code in a Chevrolet caused by a communication problem with the instrument cluster on the low-speed CAN bus?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can resetting the OBDII codes clear the U184C code in a Chevrolet related to lost communication with the instrument cluster on the low-speed CAN bus?

- Resetting the codes may temporarily clear the code, but if the underlying communication issue is not fixed, the code is likely to reappear after driving the vehicle.

9. How long does it take to repair the U184C code in a Chevrolet indicating lost communication with the instrument cluster on the low-speed CAN bus?

- The repair time can vary depending on the complexity of the issue, availability of parts, and the skill level of the technician, but it may take a few hours to a full day to diagnose and fix the problem.

10. Are there any recalls or technical service bulletins related to the U184C code in Chevrolet vehicles for the communication issue with the instrument cluster on the low-speed CAN bus?

- It is recommended to check with a Chevrolet dealership or online resources for any recalls or technical service bulletins related to this specific OBDII code to see if there are known issues or solutions provided by the manufacturer.