T A After Treatment Services LLC
Clean Truck Check tester in El Paso, TX.
- Mobile testing
- OBD test
- Motorhomes
T A After Treatment Services LLC 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
- 3324 Wexford Dr, El Paso, TX 79925
- Phone
- (915) 490-5685
- Mobile testing
- Yes — comes to your yard
- OBD testing
- Yes
- Smoke opacity (non-OBD)
- No
- Motorhomes
- Yes
- Credentialed testers
- 1
- Last verified
Call (915) 490-5685 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 T A After Treatment Services LLC can test
The test CARB requires depends on the engine's fuel and model year. Based on the services T A After Treatment Services LLC 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 |
For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is A_Dr. Green clean truck mobile 24/7 in El Paso, about 17 miles away. See listing.
Clean Truck Check testers in Texas
T A After Treatment Services LLC is one of 46 testing businesses in Texas on CARB's public tester list. 37 of them offer mobile testing and 18 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 T A After Treatment Services LLC 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 T A After Treatment Services LLC offer mobile Clean Truck Check testing?
Yes. T A After Treatment Services LLC 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 T A After Treatment Services LLC test a 2012 or older diesel truck?
T A After Treatment Services LLC does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is A_Dr. Green clean truck mobile 24/7 (about 17 miles). Trucks from 2013 on get an OBD scan instead.
How much does T A After Treatment Services LLC charge for a Clean Truck Check?
T A After Treatment Services LLC has not published prices with us; call (915) 490-5685 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 T A After Treatment Services LLC a CARB-credentialed tester?
T A After Treatment Services LLC 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 El Paso
-
MT Combustion services llc
- Mobile testing
- OBD test
- Motorhomes
-
A_Dr. Green clean truck mobile 24/7
- Mobile testing
- OBD test
- Smoke opacity
-
JPN Transport
- 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.