---
title: "Marc Lamb — Clean Truck Check, Valencia, CA | CTC Finder"
description: "Marc Lamb in Valencia, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/marc-lamb-valencia/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Marc Lamb

Clean Truck Check tester in Valencia, CA (Los Angeles 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 | Valencia, CA 91355 |
| County | Los Angeles County |
| Phone | (805) 331-0864 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Marc Lamb 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 | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is All American Mobile Repair in Valencia, about 1 mile away. [See listing](https://ctcfinder.com/tester/all-american-mobile-repair-valencia/).

## Clean Truck Check testers in Los Angeles County

Marc Lamb is one of 516 testing businesses in Los Angeles County on CARB's public tester list. 465 of them offer mobile testing and 190 do smoke opacity tests. In Valencia 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 Marc Lamb offer mobile Clean Truck Check testing?

Yes. Marc Lamb 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 Marc Lamb test a 2012 or older diesel truck?

Marc Lamb does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [All American Mobile Repair](https://ctcfinder.com/tester/all-american-mobile-repair-valencia/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Marc Lamb charge for a Clean Truck Check?

Marc Lamb has not published prices with us; call (805) 331-0864 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 Marc Lamb a CARB-credentialed tester?

Marc Lamb 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

- **[All American Mobile Repair](https://ctcfinder.com/tester/all-american-mobile-repair-valencia/)** — 24307 Magic Mountain Parkway #138, Valencia, CA 91355 — (661) 433-3808 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Mobile Nox Doc LLC](https://ctcfinder.com/tester/mobile-nox-doc-llc-valencia/)** — Valencia, CA 91355 — (805) 727-0920 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[ProLine Diesel Repair](https://ctcfinder.com/tester/proline-diesel-repair-valencia/)** — 27240 Turnberry Ln Suite 200, Valencia, CA 91355 — (661) 383-1945 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Smog To Go](https://ctcfinder.com/tester/smog-to-go-valencia/)** — 29575 Paseo Guijarro, Valencia, CA 91354 — (818) 966-1117 — 4 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Es Truck Networking](https://ctcfinder.com/tester/es-truck-networking-santa-clarita/)** — 26027 Marquis Ct, Santa Clarita, CA 91350 — (818) 746-6575 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[APA Trucking](https://ctcfinder.com/tester/apa-trucking-canyon-country/)** — 19526 Chadway Street, Canyon Country, CA 91351 — (818) 414-0494 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.