---
title: "Mark Maddox — Clean Truck Check, Anaheim, CA | CTC Finder"
description: "Mark Maddox in Anaheim, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing. Phone, address and…"
url: "https://ctcfinder.com/tester/mark-maddox-anaheim/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Mark Maddox

Clean Truck Check tester in Anaheim, CA (Orange 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 | Anaheim, CA 92805 |
| County | Orange County |
| Phone | (714) 404-6539 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Mark Maddox 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 | Not listed |

## Clean Truck Check testers in Orange County

Mark Maddox is one of 159 testing businesses in Orange County on CARB's public tester list. 146 of them offer mobile testing and 84 do smoke opacity tests. In Anaheim itself there are 25 listed businesses, 24 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 Mark Maddox offer mobile Clean Truck Check testing?

Yes. Mark Maddox 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 Mark Maddox test a 2012 or older diesel truck?

Yes. Mark Maddox 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 Mark Maddox charge for a Clean Truck Check?

Mark Maddox has not published prices with us; call (714) 404-6539 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 Mark Maddox a CARB-credentialed tester?

Mark Maddox 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

- **[Clean Diesel Specialist Anaheim](https://ctcfinder.com/tester/clean-diesel-specialist-anaheim-anaheim/)** — 220 W Santa Ana St, Anaheim, CA 92805 — (562) 857-4241 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Clean Diesel Specialists](https://ctcfinder.com/tester/clean-diesel-specialists-anaheim/)** — 220 W Santa Ana St, Anaheim, CA 92805 — (909) 660-1789 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[East To West Trucking Services](https://ctcfinder.com/tester/east-to-west-trucking-services-anaheim/)** — 1250 E La Palma Ave, Anaheim, CA 92805 — (951) 546-6655 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Raul Vasquez](https://ctcfinder.com/tester/raul-vasquez-anaheim/)** — Anaheim, CA 92805 — (714) 276-2020 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Sang's Smog](https://ctcfinder.com/tester/sangs-smog-anaheim/)** — 895 S East St Suite 105, Anaheim, CA 92805 — (714) 943-8500 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Smog It - CARB It](https://ctcfinder.com/tester/smog-it-carb-it-anaheim/)** — 1527 E Willow St, Anaheim, CA 92805 — (714) 399-8645 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.