---
title: "NorCal Diesel Solutions — Clean Truck Check, Pleasant Hill, CA"
description: "NorCal Diesel Solutions in Pleasant Hill, 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/norcal-diesel-solutions-pleasant-hill/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# NorCal Diesel Solutions

Clean Truck Check tester in Pleasant Hill, CA (Contra Costa 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 | 16 Dudley Ct, Pleasant Hill, CA 94523 |
| County | Contra Costa County |
| Phone | (925) 405-7233 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks NorCal Diesel Solutions 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 Contra Costa County

NorCal Diesel Solutions is one of 61 testing businesses in Contra Costa County on CARB's public tester list. 57 of them offer mobile testing and 38 do smoke opacity tests.

## 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 NorCal Diesel Solutions offer mobile Clean Truck Check testing?

Yes. NorCal Diesel Solutions 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 NorCal Diesel Solutions test a 2012 or older diesel truck?

Yes. NorCal Diesel Solutions 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 NorCal Diesel Solutions charge for a Clean Truck Check?

NorCal Diesel Solutions has not published prices with us; call (925) 405-7233 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 NorCal Diesel Solutions a CARB-credentialed tester?

NorCal Diesel Solutions 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

- **[Bayside Mobile Mechanic Service](https://ctcfinder.com/tester/bayside-mobile-mechanic-service-concord/)** — 3160 Cowell Rd, Concord, CA 94518 — (925) 766-4292 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[NQR Mobile Service - SF Bay Area & Nor Cal](https://ctcfinder.com/tester/nqr-mobile-service-sf-bay-area-and-nor-cal-concord/)** — 2750 Cloverdale Ave SF BAY AREA & NORCAL, Concord, CA 94518 — (925) 276-2215 — 3 mi. Services: mobile testing, OBD testing.
- **[Autos International](https://ctcfinder.com/tester/autos-international-concord/)** — 2201 Commerce Ave, Concord, CA 94520 — (925) 676-0440 — 3 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[carbdieseltest.com](https://ctcfinder.com/tester/carbdieseltest-com-concord/)** — Concord, CA 94520 — (916) 538-7777 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Fnu Imran Ali](https://ctcfinder.com/tester/fnu-imran-ali-concord/)** — Concord, CA 94520 — (925) 849-2803 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Mobile Testing Golden State Emissions](https://ctcfinder.com/tester/mobile-testing-golden-state-emissions-concord/)** — 1650 Pine Street, Concord, CA 94520 — (925) 354-4370 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.