AutoCodes – Buick – U0264 Buick

U0264 Buick Code - Lost Communication With Rear Camera Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Rear Camera Module, Rear Camera Module harness is open or shorted, Rear Camera 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: U0264 Buick indicates Lost Communication With Rear Camera Module.
Common causes: Common causes include Faulty Rear Camera Module, Rear Camera Module harness is open or shorted, Rear Camera 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 550

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 Apr 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0264 Buick Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules 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 module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Rear Camera Module has not been received.

OBDII Code U0264 Buick - Lost Communication With Rear Camera Module - AutoCodes.com — U0264 Buick Code - Lost Communication With Rear Camera Module

What does this mean?

What are the Possible Causes of the DTC U0264 Buick?

Faulty Rear Camera Module
Rear Camera Module harness is open or shorted
Rear Camera Module circuit poor electrical connection

How to Fix the DTC U0264 Buick?

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 U0264 Buick 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 U0264 Buick Code

1. What does the OBDII code U0264 mean on a Buick?

U0264 indicates that the vehicle's control modules are unable to communicate with the Rear Camera Module (RCM).

2. What are the common symptoms of code U0264 on a Buick?

Symptoms may include a blank or non-functional rearview camera display, malfunction warnings, or loss of parking assist features.

3. What causes code U0264 to appear on a Buick?

Possible causes include a faulty Rear Camera Module, damaged wiring or connectors, a blown fuse, or communication issues within the CAN (Controller Area Network) bus.

4. How can I diagnose the U0264 code on my Buick?

Start by inspecting the wiring and connectors for the Rear Camera Module, checking for physical damage, corrosion, or loose connections. Use a scan tool to verify the code and check for other related codes.

5. Can a dead battery trigger the U0264 code on a Buick?

Yes, a low or dead battery can cause temporary communication issues, including triggering the U0264 code.

6. Is it safe to drive with code U0264 on my Buick?

Yes, it is usually safe to drive, but you may lose access to rearview camera functionality and parking assist features, which could affect safety during reversing.

7. How do I fix the U0264 code on a Buick?

Repairs may include replacing a faulty Rear Camera Module, repairing damaged wiring or connectors, or resetting the system if the issue was temporary.

8. How much does it cost to fix the U0264 code on a Buick?

Repair costs vary but typically range from $100 to $500, depending on whether the issue is a simple wiring fix or requires module replacement.

9. Can a software update resolve the U0264 code on my Buick?

In some cases, a software update for the control modules may resolve communication issues, especially if the problem is caused by outdated firmware.

10. Do I need a professional to fix the U0264 code on my Buick?

While some basic checks like inspecting fuses and wiring can be done at home, diagnosing and repairing module communication issues often requires professional tools and expertise.