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U023A Cadillac Code - Lost Communication With Vehicle Direction Camera Control 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 Vehicle Direction Camera Control Module, Vehicle Direction Camera Control Module harness is open or shorted, Vehicle Direction Camera 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: U023A Cadillac indicates Lost Communication With Vehicle Direction Camera Control Module.
Common causes: Common causes include Faulty Vehicle Direction Camera Control Module, Vehicle Direction Camera Control Module harness is open or shorted, Vehicle Direction Camera 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 2,970

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 U023A 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 Vehicle Direction Camera Control Module has not been received.

OBDII Code U023A Cadillac - Lost Communication With Vehicle Direction Camera Control Module - AutoCodes.com — U023A Cadillac Code - Lost Communication With Vehicle Direction Camera Control Module

What does this mean?

What are the Possible Causes of the DTC U023A Cadillac?

Faulty Vehicle Direction Camera Control Module
Vehicle Direction Camera Control Module harness is open or shorted
Vehicle Direction Camera Control Module circuit poor electrical connection

How to Fix the DTC U023A 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 U023A 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 U023A Cadillac Code

1. What does OBDII code U023A mean on a Cadillac?

Code U023A indicates a loss of communication with the Vehicle Direction Camera Control Module, which is responsible for processing data from cameras used in advanced driver assistance systems.

2. What are the symptoms of code U023A on a Cadillac?

Common symptoms include malfunctioning or disabled driver assistance features like lane departure warning, adaptive cruise control, or parking assist, and possibly a warning light on the dashboard.

3. What causes code U023A to appear on a Cadillac?

This code can be triggered by issues such as a faulty camera control module, damaged wiring or connectors, a software glitch, or a failure in the CAN (Controller Area Network) communication system.

4. Can I drive my Cadillac with code U023A active?

Yes, but some safety features may not function properly, so extra caution is advised. Address the issue promptly to restore full system functionality.

5. How do I diagnose code U023A on my Cadillac?

Start by checking for loose or damaged wiring and connectors related to the camera control module. Use a diagnostic scanner to confirm communication between the module and the vehicle network.

6. What repairs can fix code U023A on a Cadillac?

Repairs may include reconnecting or replacing damaged wiring, repairing or replacing the camera control module, or updating the moduleâ€™s software.

7. How much does it cost to fix code U023A on a Cadillac?

The repair cost depends on the root cause. Replacing a camera control module can range from $300 to $1,000, while fixing wiring issues may cost less.

8. Can a dead battery cause code U023A on a Cadillac?

Yes, a weak or dead battery can disrupt communication between modules and trigger this code. Ensure the battery is fully charged and in good condition.

9. Does code U023A require module reprogramming on a Cadillac?

In some cases, reprogramming or updating the software of the camera control module may be necessary to resolve the issue.

10. Can weather conditions cause code U023A on a Cadillac?

Yes, extreme weather conditions like heavy rain or snow may temporarily disrupt the camera system, but the code should clear once conditions improve. If it persists, further inspection is needed.