What Does U0293 Mean?
The vehicle has lost communication with the hybrid powertrain control module. This is the main controller coordinating hybrid system operation, managing transitions between electric and gasoline power modes.
Safety Warning
Vehicle will likely not start or operate. If it does run, it may be in limp mode with no hybrid assist. High-voltage system requires certified hybrid technician for safe diagnosis and repair.
Common Causes
35%
Failed hybrid powertrain control module
25%
Damaged wiring harness or connectors to hybrid control module
20%
CAN bus network fault affecting hybrid system communication
12%
Loss of power supply to hybrid control module
8%
Poor ground connection at hybrid control module
Diagnostic Steps
1
Step 1: Verify main battery voltage and check all high-voltage system fuses
2
Step 2: Inspect hybrid control module connectors and wiring for damage, corrosion, or loose connections
3
Step 3: Test power and ground supplies at hybrid control module using multimeter
4
Step 4: Check CAN bus communication network using scan tool network diagnostics and oscilloscope
5
Step 5: Replace hybrid powertrain control module if all electrical and network circuits are confirmed operational
Estimated Repair Cost
$1,500 - $4,500
Parts + labor, varies by vehicle and location
The vehicle has lost communication with the hybrid powertrain control module. This is the main controller coordinating hybrid system operation, managing transitions between electric and gasoline power modes.
The most common cause of U0293 (Lost Communication With Hybrid Powertrain Control Module) is: Failed hybrid powertrain control module
Typical repair costs for U0293 range from $1,500 to $4,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle will likely not start or operate. If it does run, it may be in limp mode with no hybrid assist. High-voltage system requires certified hybrid technician for safe diagnosis and repair.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0293 to identify the root cause.
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Quick Info
Category
Network
System
Hybrid Powertrain System
Difficulty
Type
Generic (SAE)
Recommended Tools
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