East TN Carb Testers
Clean Truck Check tester in Knoxville, TN.
- Mobile testing
- OBD test
- Motorhomes
East TN Carb Testers appears on CARB's public list of credentialed Clean Truck Check testers. It lists mobile testing, OBD testing, motorhome testing. Mobile testing means the tester can come to your yard or job site.
- Location
- 9984 Martha Knight Cir, Knoxville, TN 37932
- Phone
- (865) 203-4060
- Mobile testing
- Yes — comes to your yard
- OBD testing
- Yes
- Smoke opacity (non-OBD)
- No
- Motorhomes
- Yes
- Credentialed testers
- 1
- Last verified
Call (865) 203-4060 Open in Google Maps
Before you call
- Have your VIN, odometer reading and plate number ready.
- Your vehicle must be registered in CTC-VIS and the annual compliance fee paid; the tester submits the result to CARB.
- Ask for the price per vehicle and any mobile trip fee. Typical published prices for an OBD test are $50–$135 per vehicle (see cost guide).
Which trucks East TN Carb Testers can test
The test CARB requires depends on the engine's fuel and model year. Based on the services East TN Carb Testers lists on CARB's tester list:
| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |
Clean Truck Check testers in Tennessee
East TN Carb Testers is one of 10 testing businesses in Tennessee on CARB's public tester list. 8 of them offer mobile testing and 4 do smoke opacity tests. Testers outside California.
When your truck is due
Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the deadline guide. You can test up to 90 days before a deadline. Get a free email reminder before each one.
How to check a tester's credential
CARB publishes its Clean Truck Check tester list, where East TN Carb Testers appears as of November 1, 2026. Listing there is optional, so a missing name does not always mean a tester is not credentialed. After the test, check that the passing result shows for your vehicle in CTC-VIS; that is what counts for compliance.
Frequently asked questions
Does East TN Carb Testers offer mobile Clean Truck Check testing?
Yes. East TN Carb Testers says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.
Can East TN Carb Testers test a 2012 or older diesel truck?
East TN Carb Testers does not list smoke opacity testing, which older non-OBD diesel trucks need. Trucks from 2013 on get an OBD scan instead.
How much does East TN Carb Testers charge for a Clean Truck Check?
East TN Carb Testers has not published prices with us; call (865) 203-4060 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the cost guide.
Is East TN Carb Testers a CARB-credentialed tester?
East TN Carb Testers appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.
Other testers near Knoxville
-
Green Valley Transportation
- Mobile testing
- OBD test
- Motorhomes
-
Wyrefree COM LLC
- Mobile testing
- OBD test
Source: CARB's public Clean Truck Check tester list, last checked . Listing on CARB's list is optional for testers, so some credentialed testers are not shown. Services, hours and prices change; please confirm with the tester before you go. Something wrong? Send a correction.