What action is recommended if a vehicle shows no obvious emission-control issues but the VIN is tampered?

• A. Fail the VI due to tampering and document findings.
• B. Pass the VI and note tampering separately.
• C. Ignore tampering unless issues are found.
• D. Request a new VIN and continue.

Answer: (A)

Tampering with the VIN undermines the integrity of the inspection because the VIN links the vehicle to its correct emission-control setup and history. Even if no emission-control issue is evident, altering the VIN signals potential fraud, theft, or misrepresentation, and the test cannot be trusted. The proper action is to fail the visual inspection due to VIN tampering and document the findings thoroughly. Note where the tampering was seen, describe what was found, and capture any supporting details or photos per protocol. This preserves the test’s accountability and prompts the appropriate follow-up. Passing or continuing with a new VIN would bypass safeguards, and ignoring the tampering would allow fraudulent activity to go unchecked.