U2003moderate severityNetwork
Module VIN Not Programmed
on 2002 Lexus LS 430 4.3L V8 · RWD
What this code means
A replacement module has not been programmed with the vehicle identification number.
Symptoms
- Module not fully functional
- Security features disabled
- Module not recognized by other systems
- Immobilizer issues
- Feature restrictions
Common causes
- Module replaced but VIN not written
- Programming procedure not completed
- Module rejects VIN programming
- Tool did not complete VIN write
Diagnostic steps
- Perform VIN programming on new module
- Use manufacturer tool for VIN write
- Verify correct VIN being programmed
- Check for module programming prerequisites
- Verify module accepts VIN
Repair notes
Program VIN into new module using manufacturer diagnostic tool. Some modules require online authorization.
Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus