Auto emissions testing for most Clinton, MD cars and trucks is required every two years by the Maryland Vehicle Administration (MVA). The best option for area motorists is to take their vehicle to a Certified Emissions Repair Facility (CERF) like Wiygul Automotive. Every one of our clinics with a CERF rating employs Master Certified Emissions Technicians. These technicians have experience, and extensive training above the average mechanic and a CERF facility have the diagnostic equipment needed to perform the On-Board Diagnostics (OBD) and the Idle Tailpipe and Gas Cap Tests.
The OBD test is required for:
Model year 1996 and newer light-duty trucks and passenger vehicles
Model year 2008 and newer heavy-duty vehicles up to 14,000 pounds
The OBD test requires a scan tool to link to the vehicle's On-Board Diagnostic computer. The scanner checks the system to determine if any of the emissions control components are failing. Malfunctioning computer components can result in a false pass or fail, or even permit the vehicle's emissions to exceed allowable limits.
As a vehicle owner, there are two things you need to be aware of before bringing in your Clinton, MD auto in for emissions testing. First, make certain the amber-colored OBD "check engine," or similar warning light is not on, or the vehicle will fail the OBD test. If the light is on, you should check with your dealer or certified repair technician before coming in for an OBD test.
Second, if you had recent repairs that required disconnection of the battery, you need to wait a week before bringing your car or truck to us for an OBD test. Driving it normally for that time resets the emissions monitor components to their proper setting. If your vehicle also has either an improperly aligned shift indicator or a driver’s door that does not close properly, the OBD registers as a failed test.
The Idle Tailpipe and Gas Cap Test is required for:
Model year 1977 and newer heavy-duty vehicles 8,501 - 26,000 pounds. Our technicians have to drive vehicles in this category at highway speeds for at least 20 minutes before the test to warm up the exhaust and then take a sample for testing. A failed test occurs under the following conditions:
If the exhaust system has leaks or holes that prevent taking a valid exhaust sample
If the gas cap is missing, damaged, or is the wrong cap for the vehicle
If the catalytic converter is damaged or missing
If your Clinton, MD vehicle fails the auto emissions testing, you should have repairs made and retest as soon as possible. If the vehicle fails again, there are certain conditions where you can be issued a waiver from the MVA. Submit the original receipts showing the cost was at least $450.00 for only emissions-related repairs. They must have been accomplished no later than 30 days before the first inspection and up to 120 days after the last inspection. The waiver is issued for two years from the original assigned test date.
Our goal at Wiygul Automotive is to help you pass the MVA emissions test. If you are due for your next test, contact us today at 866-702-8050 for the nearest location and to schedule bringing in your vehicle.