What Does U0250 Mean?
Communication has been lost with the impact classification system module, which determines airbag deployment severity based on crash characteristics. This is a critical safety system component.
Safety Warning
Critical safety concern. Airbag system may not deploy correctly or passenger airbag may be disabled. Vehicle should not be driven until repaired.
Common Causes
40%
Failed impact classification sensor/module (typically in passenger seat)
30%
Damaged or disconnected wiring under passenger seat
15%
Corroded or loose connector at impact classification module
10%
Network communication fault on airbag system bus
5%
Airbag control module internal fault
Diagnostic Steps
1
Step 1: Verify airbag warning light status on instrument cluster (should be illuminated)
2
Step 2: Check for voltage at impact classification module connector under passenger seat
3
Step 3: Inspect passenger seat wiring harness for damage, especially at seat rail flex points
4
Step 4: Disconnect and inspect impact classification module connector for corrosion or bent pins
5
Step 5: Use advanced scan tool to monitor airbag system network and test module communication
Estimated Repair Cost
$300 - $1,500
Parts + labor, varies by vehicle and location
Communication has been lost with the impact classification system module, which determines airbag deployment severity based on crash characteristics. This is a critical safety system component.
The most common cause of U0250 (Lost Communication With Impact Classification System Module) is: Failed impact classification sensor/module (typically in passenger seat)
Typical repair costs for U0250 range from $300 to $1,500, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Critical safety concern. Airbag system may not deploy correctly or passenger airbag may be disabled. Vehicle should not be driven until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U0250 to identify the root cause.
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Quick Info
Category
Network
System
Supplemental Restraint System (Airbag)
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
