AutoCodes – Generic – U0255

U0255 Code - Lost Communication With Front Display Interface Module

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 Front Display Interface Module, Front Display Interface Module harness is open or shorted, Front Display Interface 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: U0255 indicates Lost Communication With Front Display Interface Module.
Common causes: Common causes include Faulty Front Display Interface Module, Front Display Interface Module harness is open or shorted, Front Display Interface 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 15,256

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 U0255 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 Front Display Interface Module has not been received.

OBDII Code U0255 - Lost Communication With Front Display Interface Module - AutoCodes.com — U0255 Code - Lost Communication With Front Display Interface Module

What does this mean?

What are the Possible Causes of the DTC U0255?

Faulty Front Display Interface Module
Front Display Interface Module harness is open or shorted
Front Display Interface Module circuit poor electrical connection

How to Fix the DTC U0255?

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 U0255 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.

Need more information about the U0255 code?

Need more information on how to fix the U0255 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U0255 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U0255 Buick — Lost Communication With Info Display Module
U0255 Cadillac — Lost Communication With Info Display Module
U0255 Chevrolet — Lost Communication With Info Display Module
U0255 GMC — Lost Communication With Info Display 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 U0255 Code

1. What are the common symptoms of OBDII code U0255 (Lost Communication With Front Display Interface Module)?

- Common symptoms include loss of communication with the front display interface module, malfunctioning dashboard display, and potentially dim or flickering screens.

2. What are the possible causes of OBDII code U0255?

- Possible causes may include a faulty front display interface module, damaged wiring or connectors leading to the module, software issues, or a communication network problem.

3. How can I diagnose the issue related to OBDII code U0255?

- To diagnose U0255, you can start by checking the wiring and connectors for any visible damage, ensuring proper module connections, and using a diagnostic scan tool to communicate with the front display interface module.

4. Can a DIYer repair OBDII code U0255 at home?

- Repairing U0255 may require advanced diagnostic tools and expertise. While basic checks like inspecting connections can be done at home, it's recommended to consult a professional for proper diagnosis and repair.

5. Is it safe to drive with OBDII code U0255 present?

- It's generally not recommended to drive with U0255 active, as the communication loss with the front display interface module may affect crucial functions like displaying vehicle information or warning messages.

6. How much does it typically cost to repair OBDII code U0255?

- The cost of repairing U0255 can vary depending on the root cause of the issue. Costs may include diagnostic fees, potential module replacement, wiring repairs, and labor charges, which can range from a few hundred to over a thousand dollars.

7. Can a weak car battery trigger OBDII code U0255?

- Yes, a weak car battery can potentially affect the communication network and lead to U0255 being triggered. It's advisable to ensure the battery is in good condition before pursuing further diagnostics.

8. Will resetting the OBDII system clear the U0255 code?

- Resetting the OBDII system may temporarily clear the U0255 code, but if the underlying issue persists, the code is likely to return. It's crucial to diagnose and address the root cause for a lasting solution.

9. Are there any recalls related to OBDII code U0255?

- Automakers occasionally issue recalls related to communication module failures. It's recommended to check with your vehicle manufacturer or the National Highway Traffic Safety Administration (NHTSA) for any relevant recall information.

10. Can extreme temperatures impact the occurrence of OBDII code U0255?

- Yes, extreme temperatures can potentially affect the front display interface module's functionality and communication, leading to the triggering of U0255. It's important to keep the vehicle in a moderate temperature range when diagnosing such issues.