--- title: "Clean Truck Check Testers in Canyon Country, CA (6 listed)" description: "Find 6 CARB-credentialed Clean Truck Check testers in Canyon Country, Los Angeles County: 6 offer mobile testing, 3 do smoke opacity tests. Phone numbers…" url: "https://ctcfinder.com/testers/los-angeles-county/canyon-country/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Canyon Country, CA 6 testing businesses in Canyon Country (Los Angeles County) are on CARB's public Clean Truck Check tester list (6 credentialed testers). 6 offer mobile testing, 3 do smoke opacity tests, 5 test motorhomes. > CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester. ## Testers in Canyon Country - **[APA Trucking](https://ctcfinder.com/tester/apa-trucking-canyon-country/)** — 19526 Chadway Street, Canyon Country, CA 91351 — (818) 414-0494. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing. - **[BKG Trans](https://ctcfinder.com/tester/bkg-trans-canyon-country/)** — Canyon Country, CA 91351 — (661) 965-4323. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Canyon Muffler and smog inc](https://ctcfinder.com/tester/canyon-muffler-and-smog-inc-canyon-country/)** — 20741 Soledad Canyon Road, Canyon Country, CA 91351 — (661) 904-5818. Services: mobile testing, motorhome testing. - **[Jalani Automotive](https://ctcfinder.com/tester/jalani-automotive-canyon-country/)** — 20737 Soledad Canyon Rd, Canyon Country, CA 91351 — (626) 975-3934. Services: mobile testing, OBD testing, motorhome testing. - **[Smog of the Canyon](https://ctcfinder.com/tester/smog-of-the-canyon-canyon-country/)** — 17223 Sierra Hwy Suite 109, Canyon Country, CA 91351 — (661) 666-7284. Services: mobile testing, OBD testing, motorhome testing. - **[Smogman](https://ctcfinder.com/tester/smogman-canyon-country/)** — 26821 Ruether Avenue Suite C, Canyon Country, CA 91351 — (818) 939-6282. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## More testers within 20 miles - **[Mikhail HD Testing](https://ctcfinder.com/tester/mikhail-hd-testing-santa-clarita-2/)** — 17111 Sierra Hwy, Santa Clarita, CA 91351 — (661) 513-8383 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Es Truck Networking](https://ctcfinder.com/tester/es-truck-networking-santa-clarita/)** — 26027 Marquis Ct, Santa Clarita, CA 91350 — (818) 746-6575 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Smog To Go](https://ctcfinder.com/tester/smog-to-go-valencia/)** — 29575 Paseo Guijarro, Valencia, CA 91354 — (818) 966-1117 — 6 mi. Services: mobile testing, OBD testing, motorhome testing. - **[All American Mobile Repair](https://ctcfinder.com/tester/all-american-mobile-repair-valencia/)** — 24307 Magic Mountain Parkway #138, Valencia, CA 91355 — (661) 433-3808 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Marc Lamb](https://ctcfinder.com/tester/marc-lamb-valencia/)** — Valencia, CA 91355 — (805) 331-0864 — 7 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Mobile Nox Doc LLC](https://ctcfinder.com/tester/mobile-nox-doc-llc-valencia/)** — Valencia, CA 91355 — (805) 727-0920 — 7 mi. Services: mobile testing, OBD testing, motorhome testing. - **[ProLine Diesel Repair](https://ctcfinder.com/tester/proline-diesel-repair-valencia/)** — 27240 Turnberry Ln Suite 200, Valencia, CA 91355 — (661) 383-1945 — 7 mi. Services: mobile testing, OBD testing, motorhome testing. - **[ALI Trucking Services](https://ctcfinder.com/tester/ali-trucking-services-sylmar/)** — 15036 Florentine St, Sylmar, CA 91342 — (818) 585-4959 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Clean Truck Check by JS](https://ctcfinder.com/tester/clean-truck-check-by-js-sylmar/)** — 13608 Little Tujunga Canyon Rd, Sylmar, CA 91342 — (818) 259-9920 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Engine Compliance](https://ctcfinder.com/tester/engine-compliance-sylmar/)** — 13553 Polk St, Sylmar, CA 91342 — (818) 400-3646 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[JM Diesel Repairs](https://ctcfinder.com/tester/jm-diesel-repairs-sylmar/)** — 14645 Polk St, Sylmar, CA 91342 — (909) 438-4353 — 9 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Reyes Truck Repair](https://ctcfinder.com/tester/reyes-truck-repair-sylmar/)** — 11360 Ruggiero Ave, Sylmar, CA 91342 — (818) 923-7285 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in Canyon Country Los Angeles County has more listed testers than any other county. Seaports and intermodal railyards, including the Ports of Los Angeles and Long Beach, must verify Clean Truck Check compliance at entry or log non-compliant trucks (CARB). ## Cost Typical published prices in California: OBD test $50–$135 per vehicle; smoke opacity test $190–$200. Prices are set by each tester. ## Frequently asked questions ### How many Clean Truck Check testers are in Canyon Country? CTC Finder lists 6 testing businesses in Canyon Country from CARB's public tester list (6 credentialed testers), last checked November 1, 2026. Listing on CARB's list is optional, so the real number can be higher. ### Is there mobile Clean Truck Check testing in Canyon Country? Yes. 6 listed businesses in Canyon Country offer mobile testing, which means the tester comes to your yard. Use the Mobile filter above to see them. ### How much does a Clean Truck Check test cost in Canyon Country? Testers set their own prices. Published prices for an OBD test are usually $50–$135 per vehicle; smoke opacity tests for older trucks often cost more, and mobile testers may add a trip fee. See the [cost guide](https://ctcfinder.com/guide/cost/). ### How often does my truck need a Clean Truck Check test? 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](https://ctcfinder.com/guide/deadlines-2026-2027/). ## Nearby cities - [Santa Clarita](https://ctcfinder.com/testers/los-angeles-county/santa-clarita/) — 5 listings, 6 mi - [Valencia](https://ctcfinder.com/testers/los-angeles-county/valencia/) — 5 listings, 6 mi - [Sylmar](https://ctcfinder.com/testers/los-angeles-county/sylmar/) — 6 listings, 9 mi - [San Fernando](https://ctcfinder.com/testers/los-angeles-county/san-fernando/) — 3 listings, 10 mi - [Pacoima](https://ctcfinder.com/testers/los-angeles-county/pacoima/) — 4 listings, 13 mi - [Chatsworth](https://ctcfinder.com/testers/los-angeles-county/chatsworth/) — 4 listings, 13 mi - [Acton](https://ctcfinder.com/testers/los-angeles-county/acton/) — 3 listings, 13 mi - [Northridge](https://ctcfinder.com/testers/los-angeles-county/northridge/) — 3 listings, 14 mi - [Sun Valley](https://ctcfinder.com/testers/los-angeles-county/sun-valley/) — 10 listings, 15 mi - [North Hollywood](https://ctcfinder.com/testers/los-angeles-county/north-hollywood/) — 5 listings, 17 mi