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

# Stephen Tober

Clean Truck Check tester in Upland, CA (San Bernardino 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 | Upland, CA 91786 |
| County | San Bernardino County |
| Phone | (909) 294-4381 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Stephen Tober 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 San Bernardino County

Stephen Tober is one of 277 testing businesses in San Bernardino County on CARB's public tester list. 243 of them offer mobile testing and 98 do smoke opacity tests. In Upland itself there are 7 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 Stephen Tober offer mobile Clean Truck Check testing?

Yes. Stephen Tober 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 Stephen Tober test a 2012 or older diesel truck?

Yes. Stephen Tober 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 Stephen Tober charge for a Clean Truck Check?

Stephen Tober has not published prices with us; call (909) 294-4381 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 Stephen Tober a CARB-credentialed tester?

Stephen Tober 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

- **[Allen Halbert](https://ctcfinder.com/tester/allen-halbert-upland/)** — Upland, CA 91786 — (909) 222-7009 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Carlos N/A](https://ctcfinder.com/tester/carlos-n-a-upland/)** — 154 W Foothill Blvd, Upland, CA 91786 — (909) 767-1720 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Foothill Quicky smog](https://ctcfinder.com/tester/foothill-quicky-smog-upland/)** — 2016 W Foothill Blvd, Upland, CA 91786 — (626) 343-6623 — 1 mi. Services: OBD testing, motorhome testing.
- **[Foothill Quicky Smog](https://ctcfinder.com/tester/foothill-quicky-smog-upland-2/)** — 2016 W Foothill Blvd Suite B, Upland, CA 91786 — (760) 524-4254 — 1 mi. Services: OBD testing, motorhome testing.
- **[Foothill Quicky Smog 2](https://ctcfinder.com/tester/foothill-quicky-smog-2-upland/)** — 903 N Central Ave F, Upland, CA 91786 — (909) 969-4443 — 1 mi. Services: OBD testing, motorhome testing.
- **[Next GEN Clean Truck Check](https://ctcfinder.com/tester/next-gen-clean-truck-check-upland/)** — 555 Alpine St #A, Upland, CA 91786 — (626) 622-5438 — 1 mi. Services: mobile testing, OBD testing.