Clean Truck Check - Referee Referral Required Documents | California Air Resources Board

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Clean Truck Check - Referee Referral Required Documents

Refer to the supporting document checklists below for your specific Clean Truck Check Referee request:

Action Type	Required Referee Checklist	Please select this action if...
State-directed Referee Inspection / “Referee Referral” OBD test result	CHECKLIST LINK	You received a "Referee Referral" OBD result, CARB Enforcement citation, Notice to Submit to Testing (NST) letter, or other CARB Enforcement action.
Alternative Fuel System Retrofit Verification	CHECKLIST LINK	The vehicle fuel type has been converted to natural gas, propane, ethanol, methanol, or other non-diesel or non-gasoline fuel, and includes any of these fuels used in combination with each other.
Credentialed Tester Not Available	CHECKLIST LINK	No testers are available within a reasonable travel distance of your normal travel routes, or type of service is limited.
Engine Change Verification	CHECKLIST LINK	The vehicle has had an engine change or engine swap, which is the installation of an engine that is different from the one which was originally installed in the vehicle. OR The engine and fuel type configuration needs verification.
Motor Home Conversion Verification	CHECKLIST LINK	Verification to ensure a vehicle converted into a motorhome aligns with CARB's motorhome definition.
Parts Unavailability Compliance Time Extension Request and Emission Control Label (ECL) verifications	CHECKLIST LINK	A compliance time extension is requested because the part(s) needed for the repair(s) to pass the emissions compliance test, by the vehicle’s compliance deadline, is/are unavailable. Also, select this action if the engine manufacturer is unable to provide a replacement ECL and/or engine information.
Test Incompatibility / Alternative Test Procedure	CHECKLIST LINK	A vehicle is unable to complete a typical Clean Truck Check emissions compliance test due to unusual vehicle configurations, design, or other inspection incompatibility.
Test Result Dispute	CHECKLIST LINK	The vehicle owner disputes an inspection result and requests an independent evaluation of a vehicle’s compliance status.