---
title: "Diesel Technitian — Clean Truck Check, Placentia, CA"
description: "Diesel Technitian in Placentia, CA is on CARB's Clean Truck Check tester list. Offers OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/diesel-technitian-placentia/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Diesel Technitian

Clean Truck Check tester in Placentia, CA (Orange 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 | 908 Tafolla St, Placentia, CA 92870 |
| County | Orange County |
| Phone | (800) 638-1015 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Diesel Technitian 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 Credentialed tester in Anaheim in Anaheim, about 3 miles away. [See listing](https://ctcfinder.com/tester/credentialed-tester-in-anaheim-anaheim/).

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Juan Antonio Alatorre Garcia in Placentia, about 1 mile away. [See listing](https://ctcfinder.com/tester/juan-antonio-alatorre-garcia-placentia/).

## Clean Truck Check testers in Orange County

Diesel Technitian is one of 159 testing businesses in Orange County on CARB's public tester list. 146 of them offer mobile testing and 84 do smoke opacity tests. In Placentia itself there are 4 listed businesses, 3 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 Diesel Technitian offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [Juan Antonio Alatorre Garcia](https://ctcfinder.com/tester/juan-antonio-alatorre-garcia-placentia/) (about 1 mile).

### Can Diesel Technitian test a 2012 or older diesel truck?

Diesel Technitian does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Credentialed tester in Anaheim](https://ctcfinder.com/tester/credentialed-tester-in-anaheim-anaheim/) (about 3 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Diesel Technitian charge for a Clean Truck Check?

Diesel Technitian has not published prices with us; call (800) 638-1015 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 Diesel Technitian a CARB-credentialed tester?

Diesel Technitian 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

- **[Juan Antonio Alatorre Garcia](https://ctcfinder.com/tester/juan-antonio-alatorre-garcia-placentia/)** — Placentia, CA 92870 — (714) 726-8879 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Kevin Rodriguez](https://ctcfinder.com/tester/kevin-rodriguez-placentia/)** — Placentia, CA 92870 — (714) 203-4137 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[LOJX Enterprises LLC](https://ctcfinder.com/tester/lojx-enterprises-llc-placentia/)** — 1557 Ismail Pl, Placentia, CA 92870 — (714) 496-1027 — 1 mi. Services: mobile testing, OBD testing.
- **[Fernando Alvarez](https://ctcfinder.com/tester/fernando-alvarez-fullerton/)** — Fullerton, CA 92831 — (714) 823-1187 — 2 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Anaheim Clean Truck](https://ctcfinder.com/tester/anaheim-clean-truck-anaheim/)** — Anaheim, CA 92806 — (714) 307-8644 — 3 mi. Services: mobile testing, OBD testing.
- **[Credentialed tester in Anaheim](https://ctcfinder.com/tester/credentialed-tester-in-anaheim-anaheim/)** — Anaheim, CA 92806 — (213) 444-3581 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.