---
title: "Fletchers diesel — Clean Truck Check, Lancaster, CA"
description: "Fletchers diesel in Lancaster, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome…"
url: "https://ctcfinder.com/tester/fletchers-diesel-lancaster/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Fletchers diesel

Clean Truck Check tester in Lancaster, 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 | 42706 5th St E, Lancaster, CA 93535 |
| County | Los Angeles County |
| Phone | (661) 609-7174 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Fletchers diesel 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 | Yes |

## Clean Truck Check testers in Los Angeles County

Fletchers diesel 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 Lancaster itself there are 16 listed businesses, 16 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 Fletchers diesel offer mobile Clean Truck Check testing?

Yes. Fletchers diesel 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 Fletchers diesel test a 2012 or older diesel truck?

Yes. Fletchers diesel 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 Fletchers diesel charge for a Clean Truck Check?

Fletchers diesel has not published prices with us; call (661) 609-7174 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 Fletchers diesel a CARB-credentialed tester?

Fletchers diesel 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

- **[Automated Technologies](https://ctcfinder.com/tester/automated-technologies-lancaster/)** — Lancaster, CA 93535 — (661) 965-6279 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Dieseltronics Equipment Repair](https://ctcfinder.com/tester/dieseltronics-equipment-repair-lancaster/)** — 3349 East Avenue I, Lancaster, CA 93535 — (818) 355-2021 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[H&P Clean Truck Check](https://ctcfinder.com/tester/h-and-p-clean-truck-check-lancaster/)** — 2323 Avenue J8, Lancaster, CA 93535 — (661) 744-7755 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Kenneth Kline](https://ctcfinder.com/tester/kenneth-kline-lancaster/)** — Lancaster, CA 93535 — (661) 733-0784 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Premiss LLC](https://ctcfinder.com/tester/premiss-llc-lancaster/)** — 247 E Avenue H 8, Lancaster, CA 93535 — (661) 209-7919 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Shorties clean test](https://ctcfinder.com/tester/shorties-clean-test-lancaster/)** — 44719 Aspen St, Lancaster, CA 93535 — (760) 881-9907 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.