---
title: "Mid State Diesel Repair — Clean Truck Check, Salem, OR"
description: "Mid State Diesel Repair in Salem, OR is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and…"
url: "https://ctcfinder.com/tester/mid-state-diesel-repair-salem-or/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Mid State Diesel Repair

Clean Truck Check tester in Salem, 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 | 9065 River Rd NE, Salem, OR 97303 |
| Phone | (805) 414-5147 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Mid State Diesel Repair 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 AIRLIMITS-Portland OR in Portland, about 37 miles away. [See listing](https://ctcfinder.com/tester/airlimits-portland-or-portland-or/).

## Clean Truck Check testers in Oregon

Mid State Diesel Repair 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 Mid State Diesel Repair offer mobile Clean Truck Check testing?

Yes. Mid State Diesel Repair 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 Mid State Diesel Repair test a 2012 or older diesel truck?

Mid State Diesel Repair does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [AIRLIMITS-Portland OR](https://ctcfinder.com/tester/airlimits-portland-or-portland-or/) (about 37 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Mid State Diesel Repair charge for a Clean Truck Check?

Mid State Diesel Repair has not published prices with us; call (805) 414-5147 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 Mid State Diesel Repair a CARB-credentialed tester?

Mid State Diesel Repair 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

- **[Premier Truck Group Salem Oregon](https://ctcfinder.com/tester/premier-truck-group-salem-oregon-salem-or/)** — 4060 Interstate Pl NE, Salem, OR 97303 — (503) 463-6303 — 1 mi. Services: OBD testing, motorhome testing.
- **[Trans-Pro Inc.](https://ctcfinder.com/tester/trans-pro-inc-salem-or/)** — 3820 Brooklake Rd NE, Salem, OR 97303 — (503) 710-0116 — 1 mi. Services: mobile testing, OBD testing.
- **[RPD Services](https://ctcfinder.com/tester/rpd-services-salem-or/)** — 1790 16TH ST SE, Salem, OR 97302 — (503) 581-7695 — 9 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Tree line transport](https://ctcfinder.com/tester/tree-line-transport-turner-or/)** — 6801 3rd St SE, Turner, OR 97392 — (503) 757-1016 — 17 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Mechanic Maven](https://ctcfinder.com/tester/mechanic-maven-newberg-or/)** — 3007 E Douglas Ave, Newberg, OR 97132 — (208) 881-2711 — 20 mi. Services: mobile testing, OBD testing.