U0250

Lost Communication With Impact Classification System Module

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

Airbag light is on
The safety system may not work in an accident
Errors in other CAN bus-related systems
Possible problems with diagnostics via OBD-II

Causes

Open or short circuit in the module power supply circuit
Damage to the CAN bus wiring harness
Impact classification module malfunction
Power or grounding problems
Corrosion of contacts or connectors

How to Fix

Check the integrity of the wiring harness and connectors
Check the supply voltage and module ground
Scan other modules for CAN bus errors
If necessary, replace the impact classification module
Repair only from an authorized dealer

Related codes

U0249 U0251 B0001