--- title: "Clean Truck Check Testers in Oroville, CA (4 listed)" description: "Find 4 CARB-credentialed Clean Truck Check testers in Oroville, Butte County: 2 offer mobile testing, 1 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/butte-county/oroville/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Oroville, CA 4 testing businesses in Oroville (Butte County) are on CARB's public Clean Truck Check tester list (4 credentialed testers). 2 offer mobile testing, 1 do smoke opacity tests, 2 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 Oroville - **[Anthony Mason](https://ctcfinder.com/tester/anthony-mason-oroville/)** — Oroville, CA 95966 — (530) 518-3862. Services: OBD testing. - **[B&G Smog](https://ctcfinder.com/tester/b-and-g-smog-oroville/)** — 1900A Huntoon Street, Oroville, CA 95966 — (530) 282-6441. Services: OBD testing, motorhome testing. - **[Northstate Diesel](https://ctcfinder.com/tester/northstate-diesel-oroville/)** — 719 Nelson Ave, Oroville, CA 95965 — (530) 990-3505. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Woods Mobile Truck Testing ( We come to you )](https://ctcfinder.com/tester/woods-mobile-truck-testing-we-come-to-you-oroville/)** — 1808 10th St, Oroville, CA 95965 — (530) 712-1310. Services: mobile testing, OBD testing. ## More testers within 20 miles - **[HES Emergency Response LLC](https://ctcfinder.com/tester/hes-emergency-response-llc-brownsville/)** — 8889 La Porte Rd, Brownsville, CA 95919 — (916) 820-9504 — 14 mi. Services: mobile testing, OBD testing. - **[Sparks Repair](https://ctcfinder.com/tester/sparks-repair-brownsville/)** — 17479 New York House Rd, Brownsville, CA 95919 — (530) 718-9421 — 14 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Harold Greenberg](https://ctcfinder.com/tester/harold-greenberg-biggs/)** — Biggs, CA 95917 — (916) 917-8496 — 16 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Mechanic Works](https://ctcfinder.com/tester/mechanic-works-biggs/)** — 2936 2nd St, Biggs, CA 95917 — (530) 237-4417 — 16 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Registration Regulations and applications](https://ctcfinder.com/tester/registration-regulations-and-applications-biggs/)** — 2542 Highway 99, Biggs, CA 95917 — (530) 570-3229 — 16 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Top Quality Diesel Repair](https://ctcfinder.com/tester/top-quality-diesel-repair-biggs/)** — 497 C St, Biggs, CA 95917 — (530) 510-7550 — 16 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Pape Kenworth Durham](https://ctcfinder.com/tester/pape-kenworth-durham-durham/)** — Durham, CA 95938 — (530) 893-8617 — 17 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Dans Diesel Performance](https://ctcfinder.com/tester/dans-diesel-performance-gridley/)** — 1825 Ringnecked Pheasant Ct, Gridley, CA 95948 — (530) 720-9349 — 20 mi. Services: mobile testing, OBD testing. - **[Gridley Country Ford](https://ctcfinder.com/tester/gridley-country-ford-gridley/)** — Gridley, CA 95948 — (530) 961-2968 — 20 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Gridley Ford](https://ctcfinder.com/tester/gridley-ford-gridley/)** — Gridley, CA 95948 — (530) 403-3385 — 20 mi. Services: mobile testing, 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 Oroville? CTC Finder lists 4 testing businesses in Oroville from CARB's public tester list (4 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 Oroville? Yes. 2 listed businesses in Oroville 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 Oroville? 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 - [Biggs](https://ctcfinder.com/testers/butte-county/biggs/) — 4 listings, 16 mi - [Gridley](https://ctcfinder.com/testers/butte-county/gridley/) — 3 listings, 20 mi - [Marysville](https://ctcfinder.com/testers/yuba-county/marysville/) — 3 listings, 21 mi - [Chico](https://ctcfinder.com/testers/butte-county/chico/) — 10 listings, 23 mi - [Yuba City](https://ctcfinder.com/testers/sutter-county/yuba-city/) — 11 listings, 35 mi - [Nevada City](https://ctcfinder.com/testers/nevada-county/nevada-city/) — 3 listings, 36 mi