---
title: "Wilson Diesel Service, Inc — Clean Truck Check, Valley Center, CA"
description: "Wilson Diesel Service, Inc in Valley Center, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD)…"
url: "https://ctcfinder.com/tester/wilson-diesel-service-inc-valley-center/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Wilson Diesel Service, Inc

Clean Truck Check tester in Valley Center, CA (San Diego 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 | 28787 John Wayne Lane, Valley Center, CA 92082 |
| County | San Diego County |
| Phone | (619) 203-2899 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Wilson Diesel Service, Inc 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 Diego County

Wilson Diesel Service, Inc is one of 178 testing businesses in San Diego County on CARB's public tester list. 157 of them offer mobile testing and 91 do smoke opacity tests. In Valley Center itself there are 9 listed businesses, 9 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 Wilson Diesel Service, Inc offer mobile Clean Truck Check testing?

Yes. Wilson Diesel Service, Inc 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 Wilson Diesel Service, Inc test a 2012 or older diesel truck?

Yes. Wilson Diesel Service, Inc 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 Wilson Diesel Service, Inc charge for a Clean Truck Check?

Wilson Diesel Service, Inc has not published prices with us; call (619) 203-2899 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 Wilson Diesel Service, Inc a CARB-credentialed tester?

Wilson Diesel Service, Inc 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

- **[Garretts Smog](https://ctcfinder.com/tester/garretts-smog-valley-center/)** — 11651 Minneola Cir, Valley Center, CA 92082 — (760) 471-2179 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Go Rigworx - Mobile](https://ctcfinder.com/tester/go-rigworx-mobile-valley-center/)** — 14103 Margarita Lane, Valley Center, CA 92082 — (619) 775-9275 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[James G Vallez](https://ctcfinder.com/tester/james-g-vallez-valley-center/)** — Valley Center, CA 92082 — (760) 644-0329 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mile Marker Five](https://ctcfinder.com/tester/mile-marker-five-valley-center/)** — Valley Center, CA 92082 — (760) 522-5021 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Moreno Mobile Clean Truck Check](https://ctcfinder.com/tester/moreno-mobile-clean-truck-check-valley-center/)** — 27634 Heritage, Valley Center, CA 92082 — (760) 532-1673 — 1 mi. Services: mobile testing.
- **[MPower](https://ctcfinder.com/tester/mpower-valley-center/)** — 29248 Fox Run Ln, Valley Center, CA 92082 — (760) 535-7716 — 1 mi. Services: mobile testing, OBD testing.