What must the inspector do if a vehicle is equipped with parts that modify the original emission control configuration?

• A. Ignore modifications
• B. Mark Not Applicable
• C. Verify whether those parts are CARB approved or exempted
• D. Replace the parts with original equipment

Answer: (C)

When a vehicle has parts that modify the original emission control setup, the inspector must verify whether those parts are CARB approved or exempted. CARB approval (often shown by an Executive Order number on the part or its labeling) or an exemption means the modification is allowed and won’t automatically disqualify the vehicle from testing. The inspector should check the part’s documentation or labeling and confirm its status with CARB if needed, then record the verification and proceed with the inspection if the parts are approved or exempt. If the parts aren’t CARB approved or exempt, the vehicle may be noncompliant and could fail the inspection or require removal or replacement of the modification.