U0297 — Lost Communication With AC/DC Converter Control Module B

What Does U0297 Mean?

U0297 is a diagnostic trouble code indicating: Lost Communication With AC/DC Converter Control Module B. This code relates to the manufacturer-specific network system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

What To Do Next

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.

Related Codes

U0292 Lost Communication With Drive Motor Control Module B U0293 Lost Communication With Hybrid/EV Powertrain Control Module U0294 Lost Communication With Powertrain Control Monitor Module U0295 Lost Communication With AC/AC Converter Control Module U0296 Lost Communication With AC/DC Converter Control Module A U0298 Lost Communication With DC/DC Converter Control Module A U0299 Lost Communication With DC/DC Converter Control Module B U0300 Internal Control Module Software Incompatibility