---
title: "Smog Tech 1 — Clean Truck Check, Yorba Linda, CA"
description: "Smog Tech 1 in Yorba Linda, 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/smog-tech-1-yorba-linda/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Smog Tech 1

Clean Truck Check tester in Yorba Linda, CA (Orange 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 | 17035 Imperial Hwy, Yorba Linda, CA 92886 |
| County | Orange County |
| Phone | (714) 469-1099 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Smog Tech 1 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 Orange County

Smog Tech 1 is one of 159 testing businesses in Orange County on CARB's public tester list. 146 of them offer mobile testing and 84 do smoke opacity tests. In Yorba Linda itself there are 4 listed businesses, 4 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 Smog Tech 1 offer mobile Clean Truck Check testing?

Yes. Smog Tech 1 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 Smog Tech 1 test a 2012 or older diesel truck?

Yes. Smog Tech 1 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 Smog Tech 1 charge for a Clean Truck Check?

Smog Tech 1 has not published prices with us; call (714) 469-1099 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 Smog Tech 1 a CARB-credentialed tester?

Smog Tech 1 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

- **[Goodyear tire and rubber co](https://ctcfinder.com/tester/goodyear-tire-and-rubber-co-yorba-linda/)** — 17005 Imperial Hwy, Yorba Linda, CA 92886 — (909) 413-7571 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Diesel Technitian](https://ctcfinder.com/tester/diesel-technitian-placentia/)** — 908 Tafolla St, Placentia, CA 92870 — (800) 638-1015 — 3 mi. Services: OBD testing.
- **[Juan Antonio Alatorre Garcia](https://ctcfinder.com/tester/juan-antonio-alatorre-garcia-placentia/)** — Placentia, CA 92870 — (714) 726-8879 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Kevin Rodriguez](https://ctcfinder.com/tester/kevin-rodriguez-placentia/)** — Placentia, CA 92870 — (714) 203-4137 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[LOJX Enterprises LLC](https://ctcfinder.com/tester/lojx-enterprises-llc-placentia/)** — 1557 Ismail Pl, Placentia, CA 92870 — (714) 496-1027 — 3 mi. Services: mobile testing, OBD testing.
- **[Marks old towne service](https://ctcfinder.com/tester/marks-old-towne-service-anaheim/)** — 1391 N Jefferson St, Anaheim, CA 92807 — (714) 933-8077 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.