--- title: "Clean Truck Check Testers in Carlsbad, CA (3 listed)" description: "Find 3 CARB-credentialed Clean Truck Check testers in Carlsbad, San Diego County: 3 offer mobile testing, 3 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/san-diego-county/carlsbad/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Carlsbad, CA 3 testing businesses in Carlsbad (San Diego County) are on CARB's public Clean Truck Check tester list (3 credentialed testers). 3 offer mobile testing, 3 do smoke opacity tests, 3 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 Carlsbad - **[Ken Grody Ford](https://ctcfinder.com/tester/ken-grody-ford-carlsbad/)** — Carlsbad, CA 92008 — (760) 402-3190. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Sam's Mobile Diagnostics](https://ctcfinder.com/tester/sams-mobile-diagnostics-carlsbad/)** — 2330 Via Francisca, Carlsbad, CA 92008 — (442) 385-2319. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[William Sarmiento](https://ctcfinder.com/tester/william-sarmiento-carlsbad/)** — Carlsbad, CA 92008 — (442) 416-6384. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## More testers within 20 miles - **[Arroyo Trucking Consultants llc](https://ctcfinder.com/tester/arroyo-trucking-consultants-llc-oceanside/)** — 3637 Esplanade Street, Oceanside, CA 92056 — (760) 613-1079 — 4 mi. Services: mobile testing, OBD testing, motorhome testing. - **[California Environmental Solutions](https://ctcfinder.com/tester/california-environmental-solutions-oceanside/)** — 1125 Ocean Ridge Court, Oceanside, CA 92056 — (661) 619-3739 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[CTC Pro Mobile](https://ctcfinder.com/tester/ctc-pro-mobile-oceanside/)** — 1611 Calle Las Casas, Oceanside, CA 92056 — (442) 222-1530 — 4 mi. Services: mobile testing, OBD testing. - **[Mobile Diesel Testing OBD](https://ctcfinder.com/tester/mobile-diesel-testing-obd-oceanside/)** — 3641 Seaflower Lane, Oceanside, CA 92056 — (760) 847-3507 — 4 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Smog Shop Oceanside](https://ctcfinder.com/tester/smog-shop-oceanside-oceanside/)** — 4093 Oceanside Blvd Suite C, Oceanside, CA 92056 — (760) 681-4046 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[All Star Smog Oceanside](https://ctcfinder.com/tester/all-star-smog-oceanside-oceanside/)** — 2017 Oceanside Blvd, Oceanside, CA 92054 — (760) 310-7295 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Lightning Clean Truck Check](https://ctcfinder.com/tester/lightning-clean-truck-check-oceanside/)** — 242 S Coast Hwy, Oceanside, CA 92054 — (760) 721-9494 — 4 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Mobile OBD Clean Truck Check](https://ctcfinder.com/tester/mobile-obd-clean-truck-check-oceanside/)** — 1031 South Nevada Street, Oceanside, CA 92054 — (858) 260-8414 — 4 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Mobile wrench](https://ctcfinder.com/tester/mobile-wrench-vista/)** — 550 Collyn Street, Vista, CA 92083 — (760) 845-5397 — 5 mi. Services: mobile testing, OBD testing. - **[MS Auto & Smog](https://ctcfinder.com/tester/ms-auto-and-smog-vista/)** — 1415 S Santa Fe Ave, Vista, CA 92083 — (760) 623-5629 — 5 mi. Services: mobile testing, OBD testing. - **[North County Ford](https://ctcfinder.com/tester/north-county-ford-vista/)** — 450 W Vista Way, Vista, CA 92083 — (760) 827-9271 — 5 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Yovanni Maldonado](https://ctcfinder.com/tester/yovanni-maldonado-vista/)** — Vista, CA 92083 — (760) 224-4500 — 5 mi. Services: mobile testing, OBD testing, motorhome testing. ## Trucking in Carlsbad San Diego County includes the Otay Mesa border crossing, California's busiest commercial truck crossing at about one million trucks a year (GSA, 2022). ## 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 Carlsbad? CTC Finder lists 3 testing businesses in Carlsbad from CARB's public tester list (3 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 Carlsbad? Yes. 3 listed businesses in Carlsbad 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 Carlsbad? 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 - [Oceanside](https://ctcfinder.com/testers/san-diego-county/oceanside/) — 9 listings, 4 mi - [Vista](https://ctcfinder.com/testers/san-diego-county/vista/) — 5 listings, 6 mi - [San Marcos](https://ctcfinder.com/testers/san-diego-county/san-marcos/) — 4 listings, 8 mi - [Escondido](https://ctcfinder.com/testers/san-diego-county/escondido/) — 13 listings, 15 mi - [Fallbrook](https://ctcfinder.com/testers/san-diego-county/fallbrook/) — 5 listings, 18 mi - [Valley Center](https://ctcfinder.com/testers/san-diego-county/valley-center/) — 9 listings, 19 mi - [Poway](https://ctcfinder.com/testers/san-diego-county/poway/) — 3 listings, 21 mi - [Santee](https://ctcfinder.com/testers/san-diego-county/santee/) — 6 listings, 27 mi - [Temecula](https://ctcfinder.com/testers/riverside-county/temecula/) — 18 listings, 28 mi - [Murrieta](https://ctcfinder.com/testers/riverside-county/murrieta/) — 10 listings, 28 mi