--- title: "Clean Truck Check Testers in Fortuna, CA (7 listed)" description: "Find 7 CARB-credentialed Clean Truck Check testers in Fortuna, Humboldt County: 6 offer mobile testing, 3 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/humboldt-county/fortuna/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Fortuna, CA 7 testing businesses in Fortuna (Humboldt County) are on CARB's public Clean Truck Check tester list (7 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 Fortuna - **[Austin Will](https://ctcfinder.com/tester/austin-will-fortuna/)** — Fortuna, CA 95540 — (707) 768-3781. Services: mobile testing, OBD testing, motorhome testing. - **[Cody clean truck test](https://ctcfinder.com/tester/cody-clean-truck-test-fortuna/)** — 354 11th St, Fortuna, CA 95540 — (707) 617-8618. Services: mobile testing, OBD testing, motorhome testing. - **[Eri Marroquin](https://ctcfinder.com/tester/eri-marroquin-fortuna/)** — Fortuna, CA 95540 — (714) 380-2971. Services: mobile testing, OBD testing. - **[JACKSONS Mobile Welding and Equipment Repair](https://ctcfinder.com/tester/jacksons-mobile-welding-and-equipment-repair-fortuna/)** — 207 Rebecca Ln, Fortuna, CA 95540 — (707) 499-0877. Services: mobile testing, OBD testing, motorhome testing. - **[Johns' Group LLC](https://ctcfinder.com/tester/johns-group-llc-fortuna/)** — 3651 Rohnerville Rd, Fortuna, CA 95540 — (707) 725-3898. Services: OBD testing, smoke opacity (non-OBD) testing. - **[Peterson tractor](https://ctcfinder.com/tester/peterson-tractor-fortuna/)** — Fortuna, CA 95540 — (530) 560-9708. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Peterson Tractor CO](https://ctcfinder.com/tester/peterson-tractor-co-fortuna/)** — 1700 Alamar Way, Fortuna, CA 95540 — (707) 798-7627. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## More testers within 20 miles - **[Derek Riley](https://ctcfinder.com/tester/derek-riley-hydesville/)** — Hydesville, CA 95547 — (707) 601-9116 — 3 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Lynnette Tipple](https://ctcfinder.com/tester/lynnette-tipple-hydesville/)** — Hydesville, CA 95547 — (707) 845-6181 — 3 mi. Services: OBD testing, smoke opacity (non-OBD) testing. - **[Daniel linton](https://ctcfinder.com/tester/daniel-linton-eureka/)** — Eureka, CA 95503 — (707) 502-5250 — 12 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Coast Counties Peterbilt](https://ctcfinder.com/tester/coast-counties-peterbilt-eureka/)** — 2660 Jacobs Ave, Eureka, CA 95501 — (707) 599-7531 — 16 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Dan Nordstrom](https://ctcfinder.com/tester/dan-nordstrom-eureka/)** — Eureka, CA 95501 — (707) 845-6772 — 16 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Weburg Mobile Diesel LLC](https://ctcfinder.com/tester/weburg-mobile-diesel-llc-eureka/)** — 1817 2nd St, Eureka, CA 95501 — (707) 243-3308 — 16 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Cummins](https://ctcfinder.com/tester/cummins-arcata/)** — 5150 BOYD ROAD, Arcata, CA 95521 — (707) 822-7390 — 20 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Jason Fredrickson](https://ctcfinder.com/tester/jason-fredrickson-arcata/)** — Arcata, CA 95521 — (707) 672-4181 — 20 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing. - **[Northern Humboldt Union High School Districts](https://ctcfinder.com/tester/northern-humboldt-union-high-school-districts-arcata/)** — 3701 Boyd Rd, Arcata, CA 95521 — (707) 679-8111 — 20 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Seth David Mitouer](https://ctcfinder.com/tester/seth-david-mitouer-arcata/)** — Arcata, CA 95521 — (707) 292-2660 — 20 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## 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 Fortuna? CTC Finder lists 7 testing businesses in Fortuna from CARB's public tester list (7 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 Fortuna? Yes. 6 listed businesses in Fortuna 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 Fortuna? 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 - [Eureka](https://ctcfinder.com/testers/humboldt-county/eureka/) — 4 listings, 15 mi - [Arcata](https://ctcfinder.com/testers/humboldt-county/arcata/) — 4 listings, 20 mi