What Does U0596 Mean?
The control module receiving data from the AC to AC converter control module has detected invalid or corrupted data on the vehicle communication network. This converter manages alternating current power conversion in electric or hybrid vehicle charging and power distribution systems.
Common Causes
35%
AC to AC converter control module internal failure or software fault
30%
Damaged or corroded wiring and connectors at converter module
20%
Poor ground connection or voltage supply issue at converter module
10%
Failed input sensor or feedback circuit providing invalid data
5%
CAN bus communication network fault or termination issue
Diagnostic Steps
1
Step 1: Monitor live data from AC to AC converter module and verify parameter values are within expected ranges
2
Step 2: Inspect all connectors and wiring at AC to AC converter module for damage, corrosion, or loose terminals
3
Step 3: Test voltage supply and ground circuits to converter module using appropriate test equipment
4
Step 4: Verify CAN bus communication integrity using scan tool network tests or oscilloscope
5
Step 5: Perform module software update if available; replace AC to AC converter control module if invalid data persists
Estimated Repair Cost
$800 - $3,200
Parts + labor, varies by vehicle and location
The control module receiving data from the AC to AC converter control module has detected invalid or corrupted data on the vehicle communication network. This converter manages alternating current power conversion in electric or hybrid vehicle charging and power distribution systems.
The most common cause of U0596 (Invalid Data Received From AC to AC Converter Control Module) is: AC to AC converter control module internal failure or software fault
Typical repair costs for U0596 range from $800 to $3,200, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle charging function may be inoperative or limited. High-voltage system requires proper safety protocols and insulated tools for diagnosis.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0596 to identify the root cause.
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Quick Info
Category
Network
System
Electric Vehicle Charging/Power Conversion System
Difficulty
Type
Generic (SAE)
Recommended Tools
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