---
title: "Sac Valley Mobile Diesel Testing — Clean Truck Check, Davis, CA"
description: "Sac Valley Mobile Diesel Testing in Davis, 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/sac-valley-mobile-diesel-testing-davis/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Sac Valley Mobile Diesel Testing

Clean Truck Check tester in Davis, CA (Yolo 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 | Davis, CA 95616 |
| County | Yolo County |
| Phone | (707) 450-8175 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Sac Valley Mobile Diesel 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 Yolo County

Sac Valley Mobile Diesel Testing is one of 42 testing businesses in Yolo County on CARB's public tester list. 36 of them offer mobile testing and 23 do smoke opacity tests.

## 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 Sac Valley Mobile Diesel Testing offer mobile Clean Truck Check testing?

Yes. Sac Valley Mobile Diesel 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 Sac Valley Mobile Diesel Testing test a 2012 or older diesel truck?

Yes. Sac Valley Mobile Diesel 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 Sac Valley Mobile Diesel Testing charge for a Clean Truck Check?

Sac Valley Mobile Diesel Testing has not published prices with us; call (707) 450-8175 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 Sac Valley Mobile Diesel Testing a CARB-credentialed tester?

Sac Valley Mobile Diesel 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

- **[Paul Mendoza](https://ctcfinder.com/tester/paul-mendoza-woodland/)** — Woodland, CA 95695 — (530) 514-5441 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Vadim Yev CAPITAL CITY DIESEL INSPECTIONS](https://ctcfinder.com/tester/vadim-yev-capital-city-diesel-inspections-woodland/)** — 10 West Main St, Woodland, CA 95695 — (916) 538-7777 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Yolo Smog](https://ctcfinder.com/tester/yolo-smog-woodland/)** — 374 W Main St, Woodland, CA 95695 — (530) 383-9330 — 10 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Charge](https://ctcfinder.com/tester/charge-dixon/)** — 6888 Tremont Rd, Dixon, CA 95620 — (915) 433-1657 — 11 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Credentialed tester in Dixon](https://ctcfinder.com/tester/credentialed-tester-in-dixon-dixon/)** — 255 Bowen Ln, Dixon, CA 95620 — (707) 640-0797 — 11 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[DriveCity Lube and Smog](https://ctcfinder.com/tester/drivecity-lube-and-smog-dixon/)** — 2800 W A St, Dixon, CA 95620 — (707) 640-4967 — 11 mi. Services: not listed.