U0240 — Lost Communication With Entrapment Control Module B

Q: "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."

Q: "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."

Q: "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 Does U0240 Mean?

U0240 is a diagnostic trouble code indicating: Lost Communication With Entrapment Control Module B. This code relates to the network communication system. It has been reported in NHTSA complaints across 2 different vehicle models.

Symptoms of U0240

⚠️ Loss of engine power

U0240 Reports by Year

2026

1

2023

1

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"Complete loss of power steering. Service advancetrac light on Hill assist not available 2016 fusion but is not included in the recall. Car was sold to me and is registered in Pennsylvania, the salt belt. Ran scanner got codes U0240 and C102D. Clear codes, immediately get power steering back. Slo"
— Ford Fusion owner, 01/05/2026

"The Power starting keeps going out while driving it. Once vehicle is turned off and back on it resets and works again. There is active recall for this exact issue but only in 2015 models and mine is a 2016 so told it isn’t a part of recall. It happened a few times several months ago but GMC service "
— Gmc Canyon owner, 04/03/2023

Source: NHTSA Complaints Database

Most Reported Vehicles for U0240

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	FORD FUSION
2	GMC CANYON

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
🔧 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.

U0240: Lost Communication With Entrapment Control Module B