--- title: "Clean Truck Check Testers in Valley Center, CA (9 listed)" description: "Find 9 CARB-credentialed Clean Truck Check testers in Valley Center, San Diego County: 9 offer mobile testing, 4 do smoke opacity tests. Phone numbers…" url: "https://ctcfinder.com/testers/san-diego-county/valley-center/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Valley Center, CA 9 testing businesses in Valley Center (San Diego County) are on CARB's public Clean Truck Check tester list (9 credentialed testers). 9 offer mobile testing, 4 do smoke opacity tests, 7 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 Valley Center - **[Garretts Smog](https://ctcfinder.com/tester/garretts-smog-valley-center/)** — 11651 Minneola Cir, Valley Center, CA 92082 — (760) 471-2179. Services: mobile testing, OBD testing, motorhome testing. - **[Go Rigworx - Mobile](https://ctcfinder.com/tester/go-rigworx-mobile-valley-center/)** — 14103 Margarita Lane, Valley Center, CA 92082 — (619) 775-9275. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[James G Vallez](https://ctcfinder.com/tester/james-g-vallez-valley-center/)** — Valley Center, CA 92082 — (760) 644-0329. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mile Marker Five](https://ctcfinder.com/tester/mile-marker-five-valley-center/)** — Valley Center, CA 92082 — (760) 522-5021. Services: mobile testing, OBD testing, motorhome testing. - **[Moreno Mobile Clean Truck Check](https://ctcfinder.com/tester/moreno-mobile-clean-truck-check-valley-center/)** — 27634 Heritage, Valley Center, CA 92082 — (760) 532-1673. Services: mobile testing. - **[MPower](https://ctcfinder.com/tester/mpower-valley-center/)** — 29248 Fox Run Ln, Valley Center, CA 92082 — (760) 535-7716. Services: mobile testing, OBD testing. - **[San Diego Car Doctor](https://ctcfinder.com/tester/san-diego-car-doctor-valley-center/)** — Valley Center, CA 92082 — (858) 254-7560. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Wilson Diesel Service, Inc](https://ctcfinder.com/tester/wilson-diesel-service-inc-valley-center/)** — 28787 John Wayne Lane, Valley Center, CA 92082 — (619) 203-2899. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Wyatt Stevens](https://ctcfinder.com/tester/wyatt-stevens-valley-center/)** — Valley Center, CA 92082 — (760) 655-2841. Services: mobile testing, OBD testing, motorhome testing. ## More testers within 20 miles - **[Diesel Pollution Solutions Inc](https://ctcfinder.com/tester/diesel-pollution-solutions-inc-escondido/)** — 906 Jana Pl, Escondido, CA 92026 — (760) 407-7285 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[DM Emissions Testing](https://ctcfinder.com/tester/dm-emissions-testing-escondido/)** — Escondido, CA 92026 — (760) 803-8903 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[North County Clean Truck Check](https://ctcfinder.com/tester/north-county-clean-truck-check-escondido/)** — 2243 Bent Tree Place, Escondido, CA 92026 — (760) 805-9356 — 8 mi. Services: mobile testing, OBD testing. - **[Rudy's Automotive Solutions (Mobile)](https://ctcfinder.com/tester/rudys-automotive-solutions-mobile-escondido/)** — Escondido, CA 92026 — (760) 783-3392 — 8 mi. Services: mobile testing, OBD testing, motorhome testing. - **[B Able Truck & RV Repair](https://ctcfinder.com/tester/b-able-truck-and-rv-repair-escondido/)** — 1046 Stonecrest Ln, Escondido, CA 92027 — (760) 519-9132 — 8 mi. Services: mobile testing, OBD testing, motorhome testing. - **[California Smog Check & Registration Service](https://ctcfinder.com/tester/california-smog-check-and-registration-service-escondido/)** — 151 N Rose St #A104, Escondido, CA 92027 — (760) 580-4105 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ed-Vantage Diesel](https://ctcfinder.com/tester/ed-vantage-diesel-escondido/)** — Escondido, CA 92027 — (442) 777-3982 — 8 mi. Services: mobile testing, OBD testing. - **[Ed's Heavy Mobile Repair LLC](https://ctcfinder.com/tester/eds-heavy-mobile-repair-llc-escondido/)** — 2534 E El Norte Pkwy E, Escondido, CA 92027 — (858) 334-8385 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Parsley's Truck Compliance](https://ctcfinder.com/tester/parsleys-truck-compliance-escondido/)** — 729 Eastbury Drive, Escondido, CA 92027 — (760) 703-4765 — 8 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Hollandia Dairy Inc SMarcos SDE](https://ctcfinder.com/tester/hollandia-dairy-inc-smarcos-sde-san-marcos/)** — 622 East Mission Road, San Marcos, CA 92069 — (562) 644-9251 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[kashif ahmed Official tester](https://ctcfinder.com/tester/kashif-ahmed-official-tester-san-marcos/)** — 1605 W Mission Rd Suite A, San Marcos, CA 92069 — (760) 580-9100 — 10 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Rollin Wrenches LLC](https://ctcfinder.com/tester/rollin-wrenches-llc-vista/)** — 1312 Morning Glory Lane, Vista, CA 92084 — (760) 518-4791 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in Valley Center 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 Valley Center? CTC Finder lists 9 testing businesses in Valley Center from CARB's public tester list (9 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 Valley Center? Yes. 9 listed businesses in Valley Center 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 Valley Center? 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 - [Escondido](https://ctcfinder.com/testers/san-diego-county/escondido/) — 13 listings, 8 mi - [San Marcos](https://ctcfinder.com/testers/san-diego-county/san-marcos/) — 4 listings, 12 mi - [Vista](https://ctcfinder.com/testers/san-diego-county/vista/) — 5 listings, 14 mi - [Fallbrook](https://ctcfinder.com/testers/san-diego-county/fallbrook/) — 5 listings, 16 mi - [Ramona](https://ctcfinder.com/testers/san-diego-county/ramona/) — 6 listings, 18 mi - [Oceanside](https://ctcfinder.com/testers/san-diego-county/oceanside/) — 9 listings, 18 mi - [Poway](https://ctcfinder.com/testers/san-diego-county/poway/) — 3 listings, 18 mi - [Temecula](https://ctcfinder.com/testers/riverside-county/temecula/) — 18 listings, 19 mi - [Carlsbad](https://ctcfinder.com/testers/san-diego-county/carlsbad/) — 3 listings, 19 mi - [Lakeside](https://ctcfinder.com/testers/san-diego-county/lakeside/) — 12 listings, 25 mi