--- title: "Clean Truck Check Testers in El Cajon, CA (24 listed)" description: "Find 24 CARB-credentialed Clean Truck Check testers in El Cajon, San Diego County: 24 offer mobile testing, 13 do smoke opacity tests. Phone numbers, services…" url: "https://ctcfinder.com/testers/san-diego-county/el-cajon/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in El Cajon, CA 24 testing businesses in El Cajon (San Diego County) are on CARB's public Clean Truck Check tester list (24 credentialed testers). 24 offer mobile testing, 13 do smoke opacity tests, 18 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 El Cajon - **[American Pride Diesel LLC](https://ctcfinder.com/tester/american-pride-diesel-llc-el-cajon/)** — 14315-A Olde Highway 80, El Cajon, CA 92021 — (619) 567-9010. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Atalie Acosta](https://ctcfinder.com/tester/atalie-acosta-el-cajon/)** — El Cajon, CA 92021 — (619) 399-8884. Services: mobile testing, OBD testing, motorhome testing. - **[Audra Friedland](https://ctcfinder.com/tester/audra-friedland-el-cajon/)** — El Cajon, CA 92020 — (619) 419-4380. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ayad Abdulkadir](https://ctcfinder.com/tester/ayad-abdulkadir-el-cajon/)** — El Cajon, CA 92019 — (619) 678-6809. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Bradley Automotive](https://ctcfinder.com/tester/bradley-automotive-el-cajon/)** — 210 W BRADLEY AVE C1, El Cajon, CA 92020 — (619) 403-2735. Services: mobile testing, OBD testing, motorhome testing. - **[Clean Truck Check Mobile](https://ctcfinder.com/tester/clean-truck-check-mobile-el-cajon/)** — 270 E Douglas Ave #49, El Cajon, CA 92020 — (619) 212-3743. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Daniel Chiaramonte](https://ctcfinder.com/tester/daniel-chiaramonte-el-cajon/)** — El Cajon, CA 92021 — (619) 988-7563. Services: mobile testing, OBD testing. - **[Diesel Tech](https://ctcfinder.com/tester/diesel-tech-el-cajon/)** — 1175 Avocado Avenue, El Cajon, CA 92021 — (619) 478-0955. Services: mobile testing, OBD testing, motorhome testing. - **[Easy Mobile CARB Compliance Testing](https://ctcfinder.com/tester/easy-mobile-carb-compliance-testing-el-cajon/)** — El Cajon, CA 92021 — (619) 633-0458. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[El Cajon Tire Pros](https://ctcfinder.com/tester/el-cajon-tire-pros-el-cajon/)** — 1253 North 2nd Street, El Cajon, CA 92021 — (619) 823-0592. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Esequiel Cervantes](https://ctcfinder.com/tester/esequiel-cervantes-el-cajon/)** — El Cajon, CA 92020 — (619) 268-7474. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[John Hufft](https://ctcfinder.com/tester/john-hufft-el-cajon/)** — El Cajon, CA 92021 — (619) 831-9694. Services: mobile testing, OBD testing, motorhome testing. - **[Kurtis Meadows jackson](https://ctcfinder.com/tester/kurtis-meadows-jackson-el-cajon/)** — El Cajon, CA 92020 — (731) 499-6693. Services: mobile testing, OBD testing, motorhome testing. - **[Mondre](https://ctcfinder.com/tester/mondre-el-cajon/)** — El Cajon, CA 92021 — (619) 779-2032. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[PurEmission Tech](https://ctcfinder.com/tester/puremission-tech-el-cajon/)** — 760 E Chase Ave, El Cajon, CA 92020 — (619) 201-6721. Services: mobile testing, OBD testing. - **[Richard Wood](https://ctcfinder.com/tester/richard-wood-el-cajon/)** — El Cajon, CA 92021 — (931) 302-3698. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Roni Naemo](https://ctcfinder.com/tester/roni-naemo-el-cajon/)** — El Cajon, CA 92019 — (619) 322-7689. Services: mobile testing, OBD testing. - **[Royce Gent](https://ctcfinder.com/tester/royce-gent-el-cajon/)** — El Cajon, CA 92021 — (315) 317-5747. Services: mobile testing, OBD testing. - **[Saeef salih](https://ctcfinder.com/tester/saeef-salih-el-cajon/)** — El Cajon, CA 92020 — (619) 558-6405. Services: mobile testing, OBD testing. - **[San Diego Pacific Crest Services Inc](https://ctcfinder.com/tester/san-diego-pacific-crest-services-inc-el-cajon/)** — 13272 Highway 8 Business, El Cajon, CA 92021 — (760) 533-3733. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[San Diego RV Center](https://ctcfinder.com/tester/san-diego-rv-center-el-cajon/)** — 9398 Bond Avenue, El Cajon, CA 92021 — (619) 561-3531. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Smogpros](https://ctcfinder.com/tester/smogpros-el-cajon/)** — 1410 E Main St, El Cajon, CA 92021 — (619) 368-3915. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[United Carrier Authority](https://ctcfinder.com/tester/united-carrier-authority-el-cajon/)** — 2472 Hilton Head Pl #2164, El Cajon, CA 92019 — (858) 500-0004. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing. - **[Zyad Abdulkadir](https://ctcfinder.com/tester/zyad-abdulkadir-el-cajon/)** — El Cajon, CA 92019 — (619) 499-3554. Services: mobile testing, OBD testing, motorhome testing. ## More testers within 20 miles - **[California Diesel Compliance Co](https://ctcfinder.com/tester/california-diesel-compliance-co-san-diego/)** — 1985 Friendship Dr Ste L, San Diego, CA 92020 — (619) 449-4788 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ashley Welsh](https://ctcfinder.com/tester/ashley-welsh-santee/)** — Santee, CA 92071 — (619) 539-9933 — 6 mi. Services: mobile testing, OBD testing, motorhome testing. - **[IBN San Diego](https://ctcfinder.com/tester/ibn-san-diego-santee/)** — Santee, CA 92071 — (619) 844-1123 — 6 mi. Services: mobile testing, OBD testing, motorhome testing. - **[San Diego CARB Check](https://ctcfinder.com/tester/san-diego-carb-check-santee/)** — Santee, CA 92071 — (619) 201-9426 — 6 mi. Services: mobile testing, OBD testing. - **[Smith](https://ctcfinder.com/tester/smith-santee/)** — 11418 Woodside Ave N, Santee, CA 92071 — (619) 843-1464 — 6 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Stellar Mechanic](https://ctcfinder.com/tester/stellar-mechanic-santee/)** — 10054 Prospect Ave Suite I, Santee, CA 92071 — (858) 717-1550 — 6 mi. Services: mobile testing, OBD testing. - **[TD Clean Truck Check](https://ctcfinder.com/tester/td-clean-truck-check-santee/)** — Santee, CA 92071 — (619) 357-6460 — 6 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Alpine Smog and Auto Repair](https://ctcfinder.com/tester/alpine-smog-and-auto-repair-lakeside/)** — 12120 Woodside Ave, Lakeside, CA 92040 — (619) 443-3438 — 7 mi. Services: mobile testing, OBD testing, motorhome testing. - **[BeCarbCompliant](https://ctcfinder.com/tester/becarbcompliant-lakeside/)** — 12030 Rockcrest Rd, Lakeside, CA 92040 — (619) 334-7287 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[CARB Clean San Diego JH](https://ctcfinder.com/tester/carb-clean-san-diego-jh-lakeside/)** — 9687 1/2 Petite Ln, Lakeside, CA 92040 — (619) 922-4253 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Carrillo Industries LLC](https://ctcfinder.com/tester/carrillo-industries-llc-lakeside/)** — 13216 Saddle Ridge Rd, Lakeside, CA 92040 — (619) 957-0748 — 7 mi. Services: mobile testing, OBD testing, motorhome testing. - **[CT Enterprises](https://ctcfinder.com/tester/ct-enterprises-lakeside/)** — 11085 Morning Dove Rd, Lakeside, CA 92040 — (619) 654-4815 — 7 mi. Services: mobile testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in El Cajon El Cajon covers East County San Diego along I-8, the route east toward Imperial County. 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 El Cajon? CTC Finder lists 24 testing businesses in El Cajon from CARB's public tester list (24 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 El Cajon? Yes. 24 listed businesses in El Cajon 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 El Cajon? 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 - [Santee](https://ctcfinder.com/testers/san-diego-county/santee/) — 6 listings, 6 mi - [Lakeside](https://ctcfinder.com/testers/san-diego-county/lakeside/) — 12 listings, 7 mi - [San Diego](https://ctcfinder.com/testers/san-diego-county/san-diego/) — 42 listings, 12 mi - [Poway](https://ctcfinder.com/testers/san-diego-county/poway/) — 3 listings, 13 mi - [National City](https://ctcfinder.com/testers/san-diego-county/national-city/) — 5 listings, 15 mi - [Chula Vista](https://ctcfinder.com/testers/san-diego-county/chula-vista/) — 15 listings, 16 mi - [Ramona](https://ctcfinder.com/testers/san-diego-county/ramona/) — 6 listings, 16 mi - [Escondido](https://ctcfinder.com/testers/san-diego-county/escondido/) — 13 listings, 24 mi - [San Marcos](https://ctcfinder.com/testers/san-diego-county/san-marcos/) — 4 listings, 28 mi - [Valley Center](https://ctcfinder.com/testers/san-diego-county/valley-center/) — 9 listings, 31 mi