U3002

Vehicle Identification Number

Moderate severity

The control module reports a problem with the stored Vehicle Identification Number (VIN) — missing, mismatched between modules, or invalid format.

Common causes

VIN mismatch after module replacement
One of the most commonly reported causes for this code — check this first.
high
Typical part cost: $60-440
VIN not programmed in replacement module
A plausible cause — test and verify before replacing parts.
medium
Typical part cost: $60-440
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First things to check

1Confirm the code with a scan tool and check for additional related codes.
2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.

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Related codes

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Frequently asked questions

What does U3002 mean?

U3002 means "Vehicle Identification Number". It is a generic OBD-II code that points to a fault in the network / communication.

What are the most common causes of U3002?

vin mismatch after module replacement; vin not programmed in replacement module; gateway module routing can messages incorrectly — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.

Can I keep driving with this code?

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.

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