--- title: "Clean Truck Check Testers in Lancaster, CA (16 listed)" description: "Find 16 CARB-credentialed Clean Truck Check testers in Lancaster, Los Angeles County: 16 offer mobile testing, 8 do smoke opacity tests. Phone numbers…" url: "https://ctcfinder.com/testers/los-angeles-county/lancaster/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Lancaster, CA 16 testing businesses in Lancaster (Los Angeles County) are on CARB's public Clean Truck Check tester list (16 credentialed testers). 16 offer mobile testing, 8 do smoke opacity tests, 16 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 Lancaster - **[Automated Technologies](https://ctcfinder.com/tester/automated-technologies-lancaster/)** — Lancaster, CA 93535 — (661) 965-6279. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Clean Truck Repair LLC](https://ctcfinder.com/tester/clean-truck-repair-llc-lancaster/)** — 43846 Marbella Street, Lancaster, CA 93536 — (661) 499-9343. Services: mobile testing, OBD testing, motorhome testing. - **[Dieseltronics Equipment Repair](https://ctcfinder.com/tester/dieseltronics-equipment-repair-lancaster/)** — 3349 East Avenue I, Lancaster, CA 93535 — (818) 355-2021. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Fletchers diesel](https://ctcfinder.com/tester/fletchers-diesel-lancaster/)** — 42706 5th St E, Lancaster, CA 93535 — (661) 609-7174. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[H&P Clean Truck Check](https://ctcfinder.com/tester/h-and-p-clean-truck-check-lancaster/)** — 2323 Avenue J8, Lancaster, CA 93535 — (661) 744-7755. Services: mobile testing, OBD testing, motorhome testing. - **[J&S mobile clean truck checks](https://ctcfinder.com/tester/j-and-s-mobile-clean-truck-checks-lancaster/)** — 42504 62Nd Street West, Lancaster, CA 93536 — (661) 317-6206. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Jeremy Uribe](https://ctcfinder.com/tester/jeremy-uribe-lancaster/)** — Lancaster, CA 93536 — (805) 368-1622. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[JM Welding & Heavy Repair](https://ctcfinder.com/tester/jm-welding-and-heavy-repair-lancaster/)** — 25316 W Avenue B, Lancaster, CA 93536 — (661) 433-6210. Services: mobile testing, OBD testing, motorhome testing. - **[Jomars CTC](https://ctcfinder.com/tester/jomars-ctc-lancaster/)** — 42656 Tempo Drive, Lancaster, CA 93536 — (626) 481-7599. Services: mobile testing, OBD testing, motorhome testing. - **[Kenneth Kline](https://ctcfinder.com/tester/kenneth-kline-lancaster/)** — Lancaster, CA 93535 — (661) 733-0784. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Luis Murcia](https://ctcfinder.com/tester/luis-murcia-lancaster/)** — Lancaster, CA 93536 — (213) 245-0700. Services: mobile testing, OBD testing, motorhome testing. - **[Mesheck Bucknor](https://ctcfinder.com/tester/mesheck-bucknor-lancaster/)** — Lancaster, CA 93534 — (661) 575-7397. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Premiss LLC](https://ctcfinder.com/tester/premiss-llc-lancaster/)** — 247 E Avenue H 8, Lancaster, CA 93535 — (661) 209-7919. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Quartz Hill Test Only](https://ctcfinder.com/tester/quartz-hill-test-only-lancaster/)** — 42254 50th St W, Lancaster, CA 93536 — (805) 551-2565. Services: mobile testing, OBD testing, motorhome testing. - **[Shorties clean test](https://ctcfinder.com/tester/shorties-clean-test-lancaster/)** — 44719 Aspen St, Lancaster, CA 93535 — (760) 881-9907. Services: mobile testing, OBD testing, motorhome testing. - **[Voss clean truck inspection](https://ctcfinder.com/tester/voss-clean-truck-inspection-lancaster/)** — 43120 Fenner Ave, Lancaster, CA 93536 — (661) 888-3546. Services: mobile testing, OBD testing, motorhome testing. ## More testers within 20 miles - **[Kamori English](https://ctcfinder.com/tester/kamori-english-palmdale/)** — Palmdale, CA 93551 — (818) 422-3871 — 10 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Ricardo Martinez](https://ctcfinder.com/tester/ricardo-martinez-palmdale/)** — Palmdale, CA 93551 — (323) 393-7399 — 10 mi. Services: not listed. - **[Hovhannes Papikyan](https://ctcfinder.com/tester/hovhannes-papikyan-palmdale/)** — Palmdale, CA 93552 — (818) 389-2872 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Jehovanny Mobile Service](https://ctcfinder.com/tester/jehovanny-mobile-service-palmdale/)** — 5541 Cedar Pine Court, Palmdale, CA 93552 — (661) 208-2391 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Valadez smogs & Diesel service](https://ctcfinder.com/tester/valadez-smogs-and-diesel-service-palmdale/)** — 37316 Del Mar St, Palmdale, CA 93552 — (661) 434-3256 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Big iron](https://ctcfinder.com/tester/big-iron-rosamond/)** — Rosamond, CA 93560 — (661) 643-2427 — 14 mi. Services: mobile testing, OBD testing. - **[Snail Race Transportation LLC](https://ctcfinder.com/tester/snail-race-transportation-llc-rosamond/)** — 2156 Manchester St, Rosamond, CA 93560 — (661) 537-5376 — 14 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Acton 76](https://ctcfinder.com/tester/acton-76-acton/)** — 3807 Sierra Hwy, Acton, CA 93510 — (661) 317-3500 — 19 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Eric Cespedes](https://ctcfinder.com/tester/eric-cespedes-acton/)** — Acton, CA 93510 — (818) 612-9569 — 19 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Isco Machinery](https://ctcfinder.com/tester/isco-machinery-acton/)** — Acton, CA 93510 — (661) 941-6266 — 19 mi. Services: not listed. - **[M&K Equipment Inspection Services LLC.](https://ctcfinder.com/tester/m-and-k-equipment-inspection-services-llc-littlerock/)** — 11340 East Avenue R, Littlerock, CA 93543 — (310) 987-8409 — 20 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in Lancaster 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 Lancaster? CTC Finder lists 16 testing businesses in Lancaster from CARB's public tester list (16 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 Lancaster? Yes. 16 listed businesses in Lancaster 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 Lancaster? 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 - [Palmdale](https://ctcfinder.com/testers/los-angeles-county/palmdale/) — 12 listings, 17 mi - [Acton](https://ctcfinder.com/testers/los-angeles-county/acton/) — 3 listings, 19 mi - [Santa Clarita](https://ctcfinder.com/testers/los-angeles-county/santa-clarita/) — 5 listings, 23 mi - [Canyon Country](https://ctcfinder.com/testers/los-angeles-county/canyon-country/) — 6 listings, 26 mi - [Sylmar](https://ctcfinder.com/testers/los-angeles-county/sylmar/) — 6 listings, 30 mi - [Valencia](https://ctcfinder.com/testers/los-angeles-county/valencia/) — 5 listings, 32 mi - [Tehachapi](https://ctcfinder.com/testers/kern-county/tehachapi/) — 3 listings, 33 mi - [San Fernando](https://ctcfinder.com/testers/los-angeles-county/san-fernando/) — 3 listings, 34 mi - [Pacoima](https://ctcfinder.com/testers/los-angeles-county/pacoima/) — 4 listings, 35 mi - [Sun Valley](https://ctcfinder.com/testers/los-angeles-county/sun-valley/) — 10 listings, 36 mi