U3002
Vehicle Identification Number
The control module reports a problem with the stored Vehicle Identification Number (VIN) — missing, mismatched between modules, or invalid format.
- Check engine light: Yes
- Emissions related: No
- Repair difficulty: medium
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Common causes
Ordered by how often each turns out to be the cause.
- VIN mismatch after module replacementCommon
- VIN not programmed in replacement modulePossible
- Gateway module routing CAN messages incorrectlyLess likely
Parts involved
- Control Module
- Module Eeprom
U3002 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.