AutoCodes – Chevrolet – U1836 2014 Chevrolet Silverado

U1836 2014 Chevrolet Silverado Code - Lost Communication with Amplifier 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 Amplifier, Amplifier harness is open or shorted, Amplifier 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: U1836 2014 Chevrolet Silverado indicates Lost Communication with Amplifier on Low Speed CAN Bus.
Common causes: Common causes include Faulty Amplifier, Amplifier harness is open or shorted, Amplifier 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 171

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
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U1836 2014 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 U1836 2014 Chevrolet Silverado - Lost Communication with Amplifier on Low Speed CAN Bus - AutoCodes.com — U1836 2014 Chevrolet Silverado Code - Lost Communication with Amplifier on Low Speed CAN Bus

What does this mean?

What are the Possible Causes of the DTC U1836 2014 Chevrolet Silverado?

Faulty Amplifier
Amplifier harness is open or shorted
Amplifier circuit poor electrical connection

How to Fix the DTC U1836 2014 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 U1836 2014 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 U1836 2014 Chevrolet Silverado code?

Need more information on how to fix the U1836 2014 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U1836 2014 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

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 U1836 2014 Chevrolet Silverado Code

1. What are common symptoms of OBDII code U1836 on a 2014 Chevrolet Silverado?

- Common symptoms include loss of audio system functionality, malfunctioning amplifier, and potentially other communication issues within the vehicle.

2. What does the OBDII code U1836 "Lost Communication with Amplifier on Low Speed CAN Bus" mean for a 2014 Chevrolet Silverado?

- This code indicates a communication problem between the vehicle's onboard computer system and the amplifier on the low-speed CAN bus network.

3. What are the possible causes of the U1836 code on a 2014 Chevrolet Silverado?

- Possible causes include a faulty amplifier, wiring issues, loose connections, damaged CAN bus network components, or a malfunction in the vehicle's computer system.

4. How can I diagnose the U1836 code on a 2014 Chevrolet Silverado?

- Diagnose the code by checking the amplifier for power and ground, inspecting the wiring for damage, ensuring all connections are secure, and using a diagnostic scanner to analyze the CAN bus network.

5. What are some repair tips for fixing the U1836 code on a 2014 Chevrolet Silverado?

- Repair tips include repairing or replacing damaged wiring, ensuring proper grounding of the amplifier, checking and resetting the CAN bus network, and reprogramming the vehicle's computer system if necessary.

6. Can I still drive my 2014 Chevrolet Silverado with the U1836 code present?

- It is not recommended to drive the vehicle with the U1836 code present, as it may lead to further electrical issues and potentially affect the vehicle's overall performance.

7. How much does it typically cost to repair the U1836 code on a 2014 Chevrolet Silverado?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve costs for diagnostics, parts replacement, and labor, potentially ranging from a few hundred to over a thousand dollars.

8. Is it possible to reset the U1836 code on a 2014 Chevrolet Silverado without fixing the underlying issue?

- While it is possible to clear the code temporarily with a diagnostic scanner, the underlying issue causing the code will need to be addressed to prevent it from reoccurring.

9. Can a DIY enthusiast fix the U1836 code on a 2014 Chevrolet Silverado?

- DIY enthusiasts with experience in automotive electrical systems may be able to diagnose and repair the U1836 code, but it is recommended to consult a professional technician for accurate diagnosis and repair.

10. How can I prevent the U1836 code from appearing again on my 2014 Chevrolet Silverado?

- To prevent the U1836 code from reappearing, regularly inspect and maintain the vehicle's electrical components, ensure all connections are secure, and address any issues promptly to avoid further damage or malfunctions.