--- title: "E&J Truck and Equipment Repair LLC — Clean Truck Check, Oakley, CA" description: "E&J Truck and Equipment Repair LLC in Oakley, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby…" url: "https://ctcfinder.com/tester/e-and-j-truck-and-equipment-repair-llc-oakley/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # E&J Truck and Equipment Repair LLC Clean Truck Check tester in Oakley, CA (Contra Costa County). > 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. | Field | Value | |---|---| | Location | 115 Muir Ct, Oakley, CA 94561 | | County | Contra Costa County | | Phone | (707) 515-8539 | | Mobile testing | Yes | | OBD testing | Yes | | Smoke opacity (non-OBD) | No | | Motorhomes | No | | Credentialed testers | 1 | | Last verified | 2026-11-01 | ## Which trucks E&J Truck and Equipment Repair LLC can test | Your vehicle | Test required | This tester | |---|---|---| | Diesel, model year 2013 or newer | OBD scan | Yes | | Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes | | Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed | | California-registered motorhome | Same test as above by engine year, once a year | Not listed | For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Black Diamond Clean Truck Check in Oakley, about 1 mile away. [See listing](https://ctcfinder.com/tester/black-diamond-clean-truck-check-oakley/). ## Clean Truck Check testers in Contra Costa County E&J Truck and Equipment Repair LLC is one of 61 testing businesses in Contra Costa County on CARB's public tester list. 57 of them offer mobile testing and 38 do smoke opacity tests. In Oakley itself there are 9 listed businesses, 9 of them mobile. ## When your truck is due 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/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/ ## Frequently asked questions ### Does E&J Truck and Equipment Repair LLC offer mobile Clean Truck Check testing? Yes. E&J Truck and Equipment Repair LLC says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call. ### Can E&J Truck and Equipment Repair LLC test a 2012 or older diesel truck? E&J Truck and Equipment Repair LLC does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Black Diamond Clean Truck Check](https://ctcfinder.com/tester/black-diamond-clean-truck-check-oakley/) (about 1 mile). Trucks from 2013 on get an OBD scan instead. ### How much does E&J Truck and Equipment Repair LLC charge for a Clean Truck Check? E&J Truck and Equipment Repair LLC has not published prices with us; call (707) 515-8539 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/). ### Is E&J Truck and Equipment Repair LLC a CARB-credentialed tester? E&J Truck and Equipment Repair LLC appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS. ## Other testers nearby - **[Black Diamond Clean Truck Check](https://ctcfinder.com/tester/black-diamond-clean-truck-check-oakley/)** — 3801 Daniel Dr, Oakley, CA 94561 — (925) 305-7586 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Creekside Notary & Consulting](https://ctcfinder.com/tester/creekside-notary-and-consulting-oakley/)** — 100 Heavenly Way, Oakley, CA 94561 — (925) 584-4493 — 1 mi. Services: mobile testing, OBD testing. - **[E&J Truck and Equipment Repair](https://ctcfinder.com/tester/e-and-j-truck-and-equipment-repair-oakley/)** — Oakley, CA 94561 — (510) 393-2869 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Edward Chavez Pinzon](https://ctcfinder.com/tester/edward-chavez-pinzon-oakley/)** — Oakley, CA 94561 — (925) 759-8133 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing. - **[JS Repair](https://ctcfinder.com/tester/js-repair-oakley/)** — 659 Lois Ln, Oakley, CA 94561 — (650) 745-6625 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mobile Golden State Emissions Oakley](https://ctcfinder.com/tester/mobile-golden-state-emissions-oakley-oakley/)** — 5301 Elm Ln, Oakley, CA 94561 — (925) 354-4370 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.