AutoCodes – Generic – U0257

U0257 Code - Lost Communication With Front Controls/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 Controls/Display Interface Module, Front Controls/Display Interface Module harness is open or shorted, Front Controls/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: U0257 indicates Lost Communication With Front Controls/Display Interface Module.
Common causes: Common causes include Faulty Front Controls/Display Interface Module, Front Controls/Display Interface Module harness is open or shorted, Front Controls/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 44,671

How popular is this code, among other codes? Medium

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 U0257 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 Controls/Display Interface Module has not been received.

OBDII Code U0257 - Lost Communication With Front Controls/Display Interface Module - AutoCodes.com — U0257 Code - Lost Communication With Front Controls/Display Interface Module

What does this mean?

What are the Possible Causes of the DTC U0257?

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

How to Fix the DTC U0257?

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 U0257 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 Help with the Code?

Get the U0257 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U0257 Buick — Lost Communication With Info Display Module/Infotainment Faceplate Control Module
U0257 Cadillac — Lost Communication With Info Display Module/Infotainment Faceplate Control Module
U0257 Chevrolet — Lost Communication With Info Display Module/Infotainment Faceplate Control Module
U0257 Ford — Lost Communication With Front Controls/Display Interface Module
U0257 GMC — Lost Communication With Info Display Module/Infotainment Faceplate Control Module
U0257 Lincoln — Lost Communication With Front Controls/Display Interface Module
U0257 Mercury — Lost Communication With Front Controls/Display Interface 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 U0257 Code

1. What are the common symptoms of OBDII code U0257?

- Common symptoms include malfunctioning front controls or display interface modules, loss of communication with these modules, and dashboard warning lights.

2. What could cause the OBDII code U0257 to appear?

- The code U0257 is typically triggered by a faulty front controls/display interface module, damaged wiring, loose connections, or a communication network issue within the vehicle.

3. How can I diagnose the OBDII code U0257?

- To diagnose U0257, a professional diagnostic scan tool is needed to communicate with the vehicle's onboard computer system and retrieve the specific error codes. Additionally, thorough visual inspection of wiring and connections may be necessary.

4. Can I continue to drive my vehicle with the U0257 code present?

- It is not recommended to drive the vehicle with the U0257 code present, as it indicates a communication issue with important control modules that may affect the vehicle's performance and safety.

5. How can I repair the U0257 code?

- Repairing the U0257 code involves identifying and addressing the root cause, which could be repairing or replacing the front controls/display interface module, fixing wiring issues, or addressing any communication network problems.

6. Will resetting the OBDII code U0257 make it go away permanently?

- Resetting the code may temporarily clear the error, but if the underlying issue is not fixed, the code is likely to reappear once the vehicle is driven again.

7. Can a DIY enthusiast fix the U0257 code at home?

- While some basic troubleshooting steps can be taken by a DIY enthusiast, diagnosing and repairing the U0257 code may require advanced diagnostic tools and expertise, making it more suitable for a professional mechanic.

8. Is the U0257 code common in specific vehicle makes or models?

- The U0257 code can occur in various vehicle makes and models, especially those equipped with complex electronic control systems and display interfaces.

9. Does the U0257 code affect vehicle performance?

- The U0257 code itself may not directly affect vehicle performance, but it indicates an underlying issue that could potentially impact the functionality of critical control modules and systems.

10. How much does it typically cost to repair the U0257 code?

- The cost of repairing the U0257 code can vary depending on the root cause of the issue, the labor rates of the repair shop, and the cost of any replacement parts needed. It is advisable to obtain a repair estimate from a qualified mechanic.