U0256 — Lost Communication With Front Controls Interface Module A

What Does U0256 Mean?

U0256 is a diagnostic trouble code indicating: Lost Communication With Front Controls Interface Module A. This code relates to the network communication system. It has been reported in NHTSA complaints across 2 different vehicle models.

Symptoms of U0256

⚠️ Check engine light illuminated

Common Causes

🔍 Sensor or control module malfunction

U0256 Reports by Year

2024

1

2018

1

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"I have had several Ford Focuses and I’m not sure why I keep buying them. The transmission shudders or slips. Makes awful noises like grinding or something hitting the fan blade. I currently have 7 codes stored in the car but no check engine light. My garage thinks maybe it needs a new ABS control mo"
— Ford Focus owner, 02/04/2024

"MY 2013 FORD FUSION IS EXPERIENCING AN ISSUE WITH THE CLIMATE CONTROL SYSTEM AND THE WINDOW CONTROLS. I HAVE LOST COMMUNICATION WITH THE 'FRONT CONTROL INTERFACE MODULE', 'DOOR CONTROL MODULE A', AND 'DOOR CONTROL MODULE B'. WHEN THIS HAPPENS, MY ECM DISPLAYS THE FOLLOWING CODES, P193E: A/C CLUTCH R"
— Ford Fusion owner, 07/30/2018

Source: NHTSA Complaints Database

Most Reported Vehicles for U0256

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	FORD FOCUS
2	FORD FUSION

Frequently Asked Questions

Can I drive with this code?

It depends on the severity. If the vehicle runs normally, short trips are usually OK. If you notice performance issues, drivability problems, or warning lights beyond the check engine light, get it checked soon.

Will this code clear itself?

Some codes clear automatically after the underlying issue is fixed and several drive cycles pass. But the root cause must be addressed first.

How do I find the exact cause?

A code alone doesn't pinpoint the failed part. You need a diagnostic scan ($50-150 at most shops) that reads freeze frame data and live sensor readings to identify the specific component.

What To Do Next

Possible Fixes

🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
🔧 Test the relevant sensor(s) with a multimeter before replacing
🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

U0256: Lost Communication With Front Controls Interface Module A