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Maryland State Government Maryland Department of the Environment

VEIP Certified Emissions Repair Facilities (CERFs)

  • CERFs employ highly skilled Master Certified Emissions Technicians, and possess diagnostic equipment to perform effective emissions repairs.
  • All CERFs are equipped to repair vehicles that fail the On Board Diagnostics (OBD) Test.
  • CERFs marked with v are also equipped to perform Idle Test repairs.
  • You are not required to take your vehicle to a CERF for repair.
  • Some CERFs may limit repairs to specific vehicle manufacturers or models.

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Counties listed in the dropdown box only include those with certified repair facilities.  Not choosing a county and leaving the zip code blank will display all the facilities in the database.

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