---
title: "Andrew Royce — Clean Truck Check, Portland, OR | CTC Finder"
description: "Andrew Royce in Portland, OR is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/andrew-royce-portland-or/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Andrew Royce

Clean Truck Check tester in Portland, OR.

> 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 | Portland, OR 97211 |
| Phone | (503) 715-3013 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Andrew Royce 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 | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Diesel Emissions Service in Portland, about 3 miles away. [See listing](https://ctcfinder.com/tester/diesel-emissions-service-portland-or/).

## Clean Truck Check testers in Oregon

Andrew Royce is one of 25 testing businesses in Oregon on CARB's public tester list. 21 of them offer mobile testing and 6 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 Andrew Royce offer mobile Clean Truck Check testing?

Yes. Andrew Royce 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 Andrew Royce test a 2012 or older diesel truck?

Andrew Royce does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Diesel Emissions Service](https://ctcfinder.com/tester/diesel-emissions-service-portland-or/) (about 3 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Andrew Royce charge for a Clean Truck Check?

Andrew Royce has not published prices with us; call (503) 715-3013 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 Andrew Royce a CARB-credentialed tester?

Andrew Royce 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

- **[Pape](https://ctcfinder.com/tester/pape-portland-or/)** — 550 NE Columbia Blvd, Portland, OR 97211 — (503) 953-0062 — 1 mi. Services: mobile testing, OBD testing.
- **[Diesel Emissions Service](https://ctcfinder.com/tester/diesel-emissions-service-portland-or/)** — 9861 N Vancouver Way, Portland, OR 97217 — (971) 544-7282 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Stephen Ewald](https://ctcfinder.com/tester/stephen-ewald-portland-or/)** — Portland, OR 97217 — (360) 241-2293 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[AIRLIMITS-Portland OR](https://ctcfinder.com/tester/airlimits-portland-or-portland-or/)** — Portland, OR 97229 — (800) 788-5241 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Harmer Steel Products](https://ctcfinder.com/tester/harmer-steel-products-portland-or/)** — Portland, OR 97231 — (503) 679-5265 — 11 mi. Services: not listed.
- **[CalifornAir Diesel Emissions Testing](https://ctcfinder.com/tester/californair-diesel-emissions-testing-clackamas-or/)** — 15689 SE Rainier Ave, Clackamas, OR 97015 — (503) 724-5506 — 13 mi. Services: mobile testing, OBD testing.