Maryland Certified Emissions Repair Facilities

Check Engine Light Logo 
Maryland Certified Emissions Repair Facilities (CERFs) employ skilled Master Certified Emissions Technicians, who have earned the highest national recognition for expertise in emissions repairs.
Motorists should consider that specialized training and experience may be necessary to perform effective emissions repairs, but motorists are not required to have repairs done at a CERF.

All CERFs are equipped with the diagnostic equipment needed to repair vehicles that fail the On-Board Diagnostics (OBD) Test. Some are also equipped to perform Idle Test repairs. Some CERFs may limit repairs to specific vehicle manufacturers or models.

​To find a Certified Emissions Repair Facility, Click Here​​​​​​​​


Human Trafficking GET HELP

National Human Trafficking Hotline - 24/7 Confidential

1-888-373-7888 233733 More Information on human trafficking in Maryland

Customer Service Promise

The State of Maryland pledges to provide constituents, businesses, customers, and stakeholders with friendly and courteous, timely and responsive, accurate and consistent, accessible and convenient, and truthful and transparent services.

Take Our Survey

Help Stop Fraud in State Government

The Maryland General Assembly’s Office of Legislative Audits operates a toll-free fraud hotline to receive allegations of fraud and/or abuse of State government resources. Previous reports have led to elimination of fraud.

More Information