AutoCodes – Chevrolet – U0256 Chevrolet

U0256 Chevrolet Code - Lost Communication With Infotainment Faceplate 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 Infotainment Faceplate Control Module, Infotainment Faceplate Control Module harness is open or shorted, Infotainment Faceplate 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
U0256 Chevrolet indicates Lost Communication With Infotainment Faceplate Control Module.
Common causes
Common causes include Faulty Infotainment Faceplate Control Module, Infotainment Faceplate Control Module harness is open or shorted, Infotainment Faceplate 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 696
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 05, 2020
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Code U0256 Chevrolet 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 Infotainment Faceplate Control Module has not been received.
OBDII Code U0256 Chevrolet - Lost Communication With Infotainment Faceplate Control Module - AutoCodes.com
U0256 Chevrolet Code - Lost Communication With Infotainment Faceplate Control Module

What are the Possible Causes of the DTC U0256 Chevrolet?

  • Faulty Infotainment Faceplate Control Module
  • Infotainment Faceplate Control Module harness is open or shorted
  • Infotainment Faceplate Control Module circuit poor electrical connection

How to Fix the DTC U0256 Chevrolet?

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 U0256 Chevrolet 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 U0256 Chevrolet Code

1. What are the common symptoms of OBDII code U0256 in a Chevrolet related to the Lost Communication With Infotainment Faceplate Control Module?

- Common symptoms include the infotainment system not working, blank display screen, loss of audio controls, and issues with the vehicle's climate control system.

2. What are the possible causes of OBDII code U0256 in a Chevrolet?

- Possible causes include a faulty infotainment faceplate control module, damaged wiring or connectors, software glitches, or issues with the vehicle's main control module.

3. How can I diagnose the source of the problem when encountering OBDII code U0256 in a Chevrolet?

- Diagnose the issue by checking the wiring and connectors for any damage, ensuring all connections are secure, and using a diagnostic scanner to communicate with the infotainment faceplate control module.

4. Can I still drive my Chevrolet if the OBDII code U0256 is present?

- While the vehicle may still be drivable with this code, it is best to address the issue promptly to avoid potential inconvenience and further damage to the infotainment system.

5. Is it possible to reset the OBDII code U0256 in a Chevrolet without fixing the underlying issue?

- Resetting the code without addressing the root cause will likely result in the code reappearing once the vehicle is driven and the system detects the communication failure again.

6. Are there any DIY repair tips for fixing OBDII code U0256 in a Chevrolet?

- DIY repair tips may include checking and cleaning the wiring and connectors, ensuring proper connections, and resetting the infotainment system by disconnecting the battery for a few minutes.

7. Should I seek professional help to fix OBDII code U0256 in my Chevrolet?

- Due to the complexity of diagnosing and repairing communication module issues, it is advisable to seek professional help from a certified mechanic or dealership specializing in Chevrolet vehicles.

8. Can extreme temperatures or moisture affect the infotainment faceplate control module and trigger OBDII code U0256 in a Chevrolet?

- Yes, extreme temperatures or moisture can potentially damage the control module or affect the communication signals, leading to the activation of code U0256 in a Chevrolet.

9. How much does it typically cost to repair OBDII code U0256 related to the Lost Communication With Infotainment Faceplate Control Module in a Chevrolet?

- Repair costs can vary depending on the exact cause of the issue, but they may range from a few hundred dollars for minor repairs to over a thousand dollars for more complex module replacements.

10. Is it necessary to replace the infotainment faceplate control module when encountering OBDII code U0256 in a Chevrolet?

- In some cases, replacing the control module may be necessary to resolve the communication issue and clear the OBDII code U0256, especially if the module is found to be faulty or damaged beyond repair.

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