AutoCodes – Cadillac – U0264 Cadillac

U0264 Cadillac 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 Cadillac 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 745

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

What does this mean?

What are the Possible Causes of the DTC U0264 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac Code

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

The code U0264 indicates that the vehicle's control modules have lost communication with the rear camera module.

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

Symptoms may include the rear camera not displaying on the screen, a blank or frozen image, or intermittent functionality of the rear camera.

3. What causes the U0264 code to appear on a Cadillac?

Common causes include a faulty rear camera module, damaged wiring or connectors, issues with the CAN bus network, or a software glitch in the vehicleâ€™s control modules.

4. How do I diagnose the U0264 code on my Cadillac?

Start by checking the rear camera moduleâ€™s wiring and connectors for damage or corrosion. Use a scan tool to verify communication with the module and inspect the CAN bus network for faults.

5. Can a dead rear camera cause the U0264 code?

Yes, if the rear camera module fails completely, it can trigger the U0264 code due to a lack of communication with other modules.

6. Is the U0264 code serious on a Cadillac?

While it doesnâ€™t affect the drivability of the vehicle, it compromises safety features like the rear camera, which is critical for parking and reversing.

7. Can a software update fix the U0264 code on a Cadillac?

In some cases, a software update for the vehicleâ€™s control modules may resolve communication issues causing the U0264 code.

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

Repair costs vary depending on the issue, but replacing a faulty rear camera module can cost $300â€“$800, including parts and labor.

9. Can a weak car battery cause the U0264 code on a Cadillac?

Yes, a weak or failing battery can cause intermittent communication issues between modules, including the rear camera module.

10. Do I need to replace the rear camera to fix the U0264 code on my Cadillac?

Not always. The issue might be a wiring problem, connector corrosion, or a CAN bus fault rather than a failed camera module. Proper diagnosis is essential.