---
title: "ProLine Diesel Repair — Clean Truck Check, Valencia, CA"
description: "ProLine Diesel Repair in Valencia, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and…"
url: "https://ctcfinder.com/tester/proline-diesel-repair-valencia/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# ProLine Diesel Repair

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 | 27240 Turnberry Ln Suite 200, Valencia, CA 91355 |
| County | Los Angeles County |
| Phone | (661) 383-1945 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks ProLine 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 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

ProLine Diesel Repair 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 ProLine Diesel Repair offer mobile Clean Truck Check testing?

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

ProLine Diesel Repair 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 ProLine Diesel Repair charge for a Clean Truck Check?

ProLine Diesel Repair has not published prices with us; call (661) 383-1945 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 ProLine Diesel Repair a CARB-credentialed tester?

ProLine 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

- **[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.
- **[Marc Lamb](https://ctcfinder.com/tester/marc-lamb-valencia/)** — Valencia, CA 91355 — (805) 331-0864 — 1 mi. Services: mobile testing, 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.
- **[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.