What does code U0596 mean?

Q: What does code U0596 mean?

Invalid Data Received From AC/AC Converter Control Module. U0596 is a communication fault indicating that a control module received invalid or corrupted data from the AC/AC converter control module over the vehicle's network. The receiving module detected that the data frames from the converter module did not match the expected format or contained out-of-range values, so it flagged the signal as invalid rather than merely missing.

DTC codes / U05xx · Network communication / U0596

U0596Invalid Data Received From AC/AC Converter Control Module

U0596 is a communication fault indicating that a control module received invalid or corrupted data from the AC/AC converter control module over the vehicle's network. The receiving module detected that the data frames from the converter module did not match the expected format or contained out-of-range values, so it flagged the signal as invalid rather than merely missing.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyProfessional

AreaNetwork communication

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.