---
title: "Dye's Mobile Diesel Smoke Testing — Clean Truck Check, Paso Robles, CA"
description: "Dye's Mobile Diesel Smoke Testing in Paso Robles, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD)…"
url: "https://ctcfinder.com/tester/dyes-mobile-diesel-smoke-testing-paso-robles/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Dye's Mobile Diesel Smoke Testing

Clean Truck Check tester in Paso Robles, CA (San Luis Obispo 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 | 655 Cripple Creek Rd, Paso Robles, CA 93446 |
| County | San Luis Obispo County |
| Phone | (805) 835-2893 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Dye's Mobile Diesel Smoke 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 San Luis Obispo County

Dye's Mobile Diesel Smoke Testing is one of 25 testing businesses in San Luis Obispo County on CARB's public tester list. 22 of them offer mobile testing and 9 do smoke opacity tests. In Paso Robles itself there are 5 listed businesses, 5 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 Dye's Mobile Diesel Smoke Testing offer mobile Clean Truck Check testing?

Yes. Dye's Mobile Diesel Smoke 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 Dye's Mobile Diesel Smoke Testing test a 2012 or older diesel truck?

Yes. Dye's Mobile Diesel Smoke 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 Dye's Mobile Diesel Smoke Testing charge for a Clean Truck Check?

Dye's Mobile Diesel Smoke Testing has not published prices with us; call (805) 835-2893 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 Dye's Mobile Diesel Smoke Testing a CARB-credentialed tester?

Dye's Mobile Diesel Smoke 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

- **[Coops Carb Compliance LLC](https://ctcfinder.com/tester/coops-carb-compliance-llc-paso-robles/)** — 6520 Long Hill Pl, Paso Robles, CA 93446 — (620) 778-2208 — 1 mi. Services: mobile testing, OBD testing.
- **[D's Diesel N' Off- Road](https://ctcfinder.com/tester/ds-diesel-n-off-road-paso-robles/)** — 6085 Eucalyptus Rd, Paso Robles, CA 93446 — (805) 286-8116 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Kings Oil Tools](https://ctcfinder.com/tester/kings-oil-tools-paso-robles/)** — Paso Robles, CA 93446 — (805) 610-2796 — 1 mi. Services: mobile testing, OBD testing.
- **[Mid-State Repair & Service](https://ctcfinder.com/tester/mid-state-repair-and-service-paso-robles/)** — 1946 Wood Duck Ln, Paso Robles, CA 93446 — (805) 729-1068 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Mtech Unlimited](https://ctcfinder.com/tester/mtech-unlimited-templeton/)** — Templeton, CA 93465 — (805) 550-8744 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Affordable Auto Care](https://ctcfinder.com/tester/affordable-auto-care-atascadero/)** — 4495 Traffic Way, Atascadero, CA 93422 — (805) 258-1495 — 13 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.