AutoCodes – Chevrolet – U184B 2016 Chevrolet Silverado

U184B 2016 Chevrolet Silverado Code - Lost Communication with Remote Heater and Air Conditioning Control 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 Heating, Ventilation, and Air Conditioning (HVAC) Control Module, Heating, Ventilation, and Air Conditioning Control Module harness is open or shorted, Heating, Ventilation, and Air Conditioning 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: U184B 2016 Chevrolet Silverado indicates Lost Communication with Remote Heater and Air Conditioning Control Module on Low Speed CAN Bus.
Common causes: Common causes include Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module, Heating, Ventilation, and Air Conditioning Control Module harness is open or shorted, Heating, Ventilation, and Air Conditioning 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 193

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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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 U184B 2016 Chevrolet Silverado 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 U184B 2016 Chevrolet Silverado - Lost Communication with Remote Heater and Air Conditioning Control Module on Low Speed CAN Bus - AutoCodes.com — U184B 2016 Chevrolet Silverado Code - Lost Communication with Remote Heater and Air Conditioning Control Module on Low Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U184B 2016 Chevrolet Silverado?

Faulty Heating, Ventilation, and Air Conditioning (HVAC) Control Module
Heating, Ventilation, and Air Conditioning Control Module harness is open or shorted
Heating, Ventilation, and Air Conditioning Control Module circuit poor electrical connection

How to Fix the DTC U184B 2016 Chevrolet Silverado?

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 U184B 2016 Chevrolet Silverado 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 U184B 2016 Chevrolet Silverado 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 U184B 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code U184B in a 2016 Chevrolet Silverado?

- Common symptoms include issues with the remote heater and air conditioning control module, such as loss of communication or control over the module's functions.

2. What does the OBDII code U184B "Lost Communication with Remote Heater and Air Conditioning Control Module on Low Speed CAN Bus" mean?

- This code indicates a communication problem between the vehicle's onboard diagnostic system and the remote heater and air conditioning control module on the low-speed CAN bus network.

3. What are the possible causes of the U184B code in a 2016 Chevrolet Silverado?

- The code U184B can be triggered by issues such as a faulty remote heater and air conditioning control module, damaged wiring or connectors, a defective CAN bus network, or a communication fault within the system.

4. How can I diagnose the U184B code in my 2016 Chevrolet Silverado?

- Diagnosis involves checking the wiring connections, inspecting the control module for any visible damage, scanning the vehicle for additional trouble codes, and using a diagnostic tool to analyze the communication network.

5. What are some repair tips for resolving the U184B code on a 2016 Chevrolet Silverado?

- Repair tips may include checking and repairing any damaged wiring or connectors, replacing the remote heater and air conditioning control module if necessary, ensuring proper connections, and clearing the code after completing repairs.

6. Can the U184B code be safely ignored or cleared without fixing the underlying issue?

- Ignoring or clearing the U184B code without addressing the underlying communication problem can lead to continued issues with the remote heater and air conditioning control module and potentially affect the vehicle's overall performance.

7. Is it safe to drive my 2016 Chevrolet Silverado with the U184B code present?

- It is generally not recommended to drive the vehicle with the U184B code active, as it may indicate a communication fault that could affect the operation of critical systems like the heater and air conditioning controls.

8. How much does it typically cost to repair the U184B code in a 2016 Chevrolet Silverado?

- The cost of repairing the U184B code can vary depending on the specific issue, parts needed, and labor rates. It's advisable to consult a professional mechanic for an accurate estimate.

9. Can I fix the U184B code in my 2016 Chevrolet Silverado myself, or should I seek professional help?

- While some DIY enthusiasts may be able to diagnose and repair the U184B code themselves, it's recommended to seek professional help, especially if you're not familiar with automotive diagnostics or electrical systems.

10. Will resetting the vehicle's computer clear the U184B code permanently?

- Resetting the vehicle's computer may temporarily clear the U184B code, but if the underlying issue causing the communication fault is not addressed, the code is likely to reappear. It's essential to diagnose and fix the root cause of the problem.