---
title: "Clean test — Clean Truck Check, Pomona, CA | CTC Finder"
description: "Clean test in Pomona, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/clean-test-pomona/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean test

Clean Truck Check tester in Pomona, CA (Los Angeles 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 | 2413 South Reservoir Street, Pomona, CA 91766 |
| County | Los Angeles County |
| Phone | (909) 614-3388 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Clean test 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 MCS Testing LLC in Pomona, about 3 miles away. [See listing](https://ctcfinder.com/tester/mcs-testing-llc-pomona/).

## Clean Truck Check testers in Los Angeles County

Clean test is one of 516 testing businesses in Los Angeles County on CARB's public tester list. 465 of them offer mobile testing and 190 do smoke opacity tests. In Pomona itself there are 12 listed businesses, 11 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 test offer mobile Clean Truck Check testing?

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

Clean test does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [MCS Testing LLC](https://ctcfinder.com/tester/mcs-testing-llc-pomona/) (about 3 miles). Trucks from 2013 on get an OBD scan instead.

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

Clean test has not published prices with us; call (909) 614-3388 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 test a CARB-credentialed tester?

Clean test 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

- **[Arties CTC Testing](https://ctcfinder.com/tester/arties-ctc-testing-pomona/)** — 1284 Prospect Drive, Pomona, CA 91766 — (562) 676-6754 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Holistic Diesel](https://ctcfinder.com/tester/holistic-diesel-pomona/)** — 4053 E 9th St, Pomona, CA 91766 — (909) 729-6748 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Joseph Manke](https://ctcfinder.com/tester/joseph-manke-pomona/)** — Pomona, CA 91766 — (909) 762-8724 — 1 mi. Services: mobile testing, OBD testing.
- **[Juan Razo](https://ctcfinder.com/tester/juan-razo-pomona/)** — Pomona, CA 91766 — (909) 446-9284 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Pomona Gear](https://ctcfinder.com/tester/pomona-gear-pomona/)** — Pomona, CA 91766 — (909) 634-6435 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[MCS Testing LLC](https://ctcfinder.com/tester/mcs-testing-llc-pomona/)** — 1668 Via Estrella, Pomona, CA 91768 — (626) 409-8278 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.