---
title: "JBJ Mobile Diesel Smog — Clean Truck Check, Hesperia, CA"
description: "JBJ Mobile Diesel Smog in Hesperia, 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/jbj-mobile-diesel-smog-hesperia/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# JBJ Mobile Diesel Smog

Clean Truck Check tester in Hesperia, 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 | 11370 Shahaptian Ave, Hesperia, CA 92345 |
| County | San Bernardino County |
| Phone | (909) 254-3272 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks JBJ Mobile Diesel Smog 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

JBJ Mobile Diesel Smog 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 Hesperia itself there are 20 listed businesses, 18 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 JBJ Mobile Diesel Smog offer mobile Clean Truck Check testing?

Yes. JBJ Mobile Diesel Smog 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 JBJ Mobile Diesel Smog test a 2012 or older diesel truck?

Yes. JBJ Mobile Diesel Smog 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 JBJ Mobile Diesel Smog charge for a Clean Truck Check?

JBJ Mobile Diesel Smog has not published prices with us; call (909) 254-3272 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 JBJ Mobile Diesel Smog a CARB-credentialed tester?

JBJ Mobile Diesel Smog 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

- **[Centurion Transport](https://ctcfinder.com/tester/centurion-transport-hesperia/)** — 9724 E Ave, Hesperia, CA 92345 — (760) 662-9513 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Clear Pass](https://ctcfinder.com/tester/clear-pass-hesperia/)** — Hesperia, CA 92345 — (951) 519-0004 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Gilberto Martinez](https://ctcfinder.com/tester/gilberto-martinez-hesperia/)** — Hesperia, CA 92345 — (442) 319-9430 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Hector Reyes](https://ctcfinder.com/tester/hector-reyes-hesperia/)** — Hesperia, CA 92345 — (951) 399-9782 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Kevin Tafoya](https://ctcfinder.com/tester/kevin-tafoya-hesperia/)** — Hesperia, CA 92345 — (323) 617-1260 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Kristopher Espinoza](https://ctcfinder.com/tester/kristopher-espinoza-hesperia/)** — Hesperia, CA 92345 — (760) 998-9291 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.