---
title: "California CTC Mobile Testing — Clean Truck Check, Fairfield, CA"
description: "California CTC Mobile Testing in Fairfield, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing…"
url: "https://ctcfinder.com/tester/california-ctc-mobile-testing-fairfield/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# California CTC Mobile Testing

Clean Truck Check tester in Fairfield, CA (Solano 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 | 5328 Venus Dr, Fairfield, CA 94534 |
| County | Solano County |
| Phone | (707) 761-4000 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks California CTC Mobile Testing 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 Solano County

California CTC Mobile Testing is one of 38 testing businesses in Solano County on CARB's public tester list. 34 of them offer mobile testing and 21 do smoke opacity tests. In Fairfield itself there are 11 listed businesses, 10 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 California CTC Mobile Testing offer mobile Clean Truck Check testing?

Yes. California CTC Mobile Testing 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 California CTC Mobile Testing test a 2012 or older diesel truck?

Yes. California CTC Mobile Testing 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 California CTC Mobile Testing charge for a Clean Truck Check?

California CTC Mobile Testing has not published prices with us; call (707) 761-4000 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 California CTC Mobile Testing a CARB-credentialed tester?

California CTC Mobile Testing 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

- **[Ajmer Shergill](https://ctcfinder.com/tester/ajmer-shergill-fairfield/)** — Fairfield, CA 94534 — (707) 227-6194 — 1 mi. Services: mobile testing, OBD testing.
- **[Chris Casilang](https://ctcfinder.com/tester/chris-casilang-fairfield/)** — Fairfield, CA 94534 — (707) 205-6922 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing.
- **[Elite Truck & trailer Repair LLC](https://ctcfinder.com/tester/elite-truck-and-trailer-repair-llc-fairfield/)** — 505 Watt Dr Suite 5, Fairfield, CA 94534 — (707) 310-9779 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Golden State Emissions Pro](https://ctcfinder.com/tester/golden-state-emissions-pro-fairfield/)** — 4776 Opus Cir, Fairfield, CA 94534 — (707) 373-7897 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Mobile Testing](https://ctcfinder.com/tester/mobile-testing-fairfield-2/)** — Fairfield, CA 94534 — (916) 538-7777 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Sohal Truck & Tires](https://ctcfinder.com/tester/sohal-truck-and-tires-fairfield/)** — 393 Watt Dr, Fairfield, CA 94534 — (707) 208-3032 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.