U0233 — Lost Communication With Side Obstacle Detection 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 U0233 Mean?

U0233 is a diagnostic trouble code indicating: Lost Communication With Side Obstacle Detection Control Module B. This code relates to the network communication system. It has been reported in NHTSA complaints across 1 different vehicle models.

Common Causes

🔍 Wiring or connector problem
🔍 Sensor or control module malfunction

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"The 2015 Chevy Traverse LTZ that I own is presenting with the same problems as many of its body style and year. The water intrusion has caused wiring to corrode in the side detection system & the drivers door wiring harness is presenting with open circuits. The LH side object module is throwing cod"
— Chevrolet Traverse owner, 04/01/2025

Source: NHTSA Complaints Database

Most Reported Vehicles for U0233

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	CHEVROLET TRAVERSE

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
🔧 Inspect wiring harness and connectors for damage, corrosion, or loose connections
🔧 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.

U0233: Lost Communication With Side Obstacle Detection Control Module B