AutoCodes – Generic – U023C

U023C Code - Lost Communication With Image Processing Module 'C'

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Image Processing Module 'C', Image Processing Module 'C' harness is open or shorted, Image Processing Module 'C' 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: U023C indicates Lost Communication With Image Processing Module 'C'.
Common causes: Common causes include Faulty Image Processing Module 'C', Image Processing Module 'C' harness is open or shorted, Image Processing Module 'C' 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 1,764

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 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U023C Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Image Processing Module 'C' has not been received.

OBDII Code U023C - Lost Communication With Image Processing Module 'C' - AutoCodes.com — U023C Code - Lost Communication With Image Processing Module 'C'

What does this mean?

What are the Possible Causes of the DTC U023C?

Faulty Image Processing Module 'C'
Image Processing Module 'C' harness is open or shorted
Image Processing Module 'C' circuit poor electrical connection

How to Fix the DTC U023C?

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 U023C 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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Need more information on how to fix the U023C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U023C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U023C Buick — Lost Communication With Night Vision Camera Control Module
U023C Cadillac — Lost Communication With Night Vision Camera Control Module
U023C Chevrolet — Lost Communication With Night Vision Camera Control Module
U023C GMC — Lost Communication With Night Vision Camera Control Module

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 U023C Code

1. What are the common symptoms of OBDII code U023C?

- Common symptoms include issues with the vehicle's image processing system, such as a malfunctioning backup camera or other cameras, as well as warning lights on the dashboard.

2. What can cause the OBDII code U023C to appear?

- The code U023C usually indicates a communication problem between the vehicle's diagnostic system and the image processing module 'C'. This can be caused by damaged wiring, loose connections, or a faulty module.

3. How can I diagnose the cause of the U023C code?

- To diagnose the issue, you can start by checking the wiring and connections related to the image processing module 'C'. Using a scan tool to communicate with the module can also help identify the problem.

4. Is it safe to continue driving with the U023C code present?

- It is generally not recommended to continue driving with the U023C code, as it may affect the functionality of important safety features like the backup camera. It's best to address the issue promptly.

5. Can I repair the U023C code myself?

- Depending on your level of automotive expertise, you may be able to repair the U023C code yourself by checking and repairing any damaged wiring or connections. However, if you are unsure, it's advisable to seek professional help.

6. How much does it typically cost to repair the U023C code?

- The cost of repairing the U023C code can vary depending on the underlying cause of the communication issue. It may range from a simple fix like reconnecting a loose wire to replacing the image processing module 'C'.

7. Are there any preventive measures to avoid the U023C code in the future?

- Regularly inspecting and maintaining the wiring and connections related to the image processing module 'C' can help prevent communication issues that trigger the U023C code.

8. Can a faulty image processing module 'C' cause other problems in the vehicle?

- A faulty image processing module 'C' can potentially cause other issues related to the vehicle's image processing system, such as distorted camera images or complete camera failure.

9. How long does it take to repair the U023C code?

- The repair time for the U023C code can vary depending on the complexity of the issue. Simple fixes like reconnecting a loose wire may take a short time, while replacing a faulty module may require more time.

10. Will resetting the OBDII system clear the U023C code?

- Resetting the OBDII system may temporarily clear the U023C code, but it is likely to reappear if the underlying communication issue between the diagnostic system and the image processing module 'C' is not resolved.