---
title: "Clean Truck Check — Clean Truck Check, Fresno, CA"
description: "Clean Truck Check in Fresno, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome…"
url: "https://ctcfinder.com/tester/clean-truck-check-fresno/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean Truck Check

Clean Truck Check tester in Fresno, CA (Fresno 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 | 3352 W Oswego Ave, Fresno, CA 93711 |
| County | Fresno County |
| Phone | (559) 293-1050 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Clean Truck Check 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 | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in Fresno County

Clean Truck Check is one of 123 testing businesses in Fresno County on CARB's public tester list. 102 of them offer mobile testing and 47 do smoke opacity tests. In Fresno itself there are 74 listed businesses, 60 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 Clean Truck Check offer mobile Clean Truck Check testing?

Yes. Clean Truck Check 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 Clean Truck Check test a 2012 or older diesel truck?

Yes. Clean Truck Check lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does Clean Truck Check charge for a Clean Truck Check?

Clean Truck Check has not published prices with us; call (559) 293-1050 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 Clean Truck Check a CARB-credentialed tester?

Clean Truck Check 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

- **[Iron Horse Diesel Repair & Emissions](https://ctcfinder.com/tester/iron-horse-diesel-repair-and-emissions-fresno/)** — 261 W Audubon Dr, Fresno, CA 93711 — (559) 281-7415 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Michael Harris](https://ctcfinder.com/tester/michael-harris-fresno/)** — Fresno, CA 93704 — (559) 417-7599 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Star Pro Smog](https://ctcfinder.com/tester/star-pro-smog-fresno/)** — 1606 N West Ave, Fresno, CA 93705 — (559) 653-1016 — 3 mi. Services: mobile testing, OBD testing.
- **[A smog brothers](https://ctcfinder.com/tester/a-smog-brothers-fresno/)** — 3285 W Belmont Ave, Fresno, CA 93722 — (559) 271-7645 — 4 mi. Services: mobile testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[AAA Inspections](https://ctcfinder.com/tester/aaa-inspections-fresno/)** — 2387 N Hanover Ave, Fresno, CA 93722 — (559) 705-4150 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[CK Truck & Trailer Repair INC](https://ctcfinder.com/tester/ck-truck-and-trailer-repair-inc-fresno/)** — 5249 N Cornelia Ave, Fresno, CA 93722 — (559) 916-8999 — 4 mi. Services: OBD testing, smoke opacity (non-OBD) testing.