---
title: "Pacific Coast Diesel — Clean Truck Check, Nipomo, CA"
description: "Pacific Coast Diesel in Nipomo, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby…"
url: "https://ctcfinder.com/tester/pacific-coast-diesel-nipomo/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Pacific Coast Diesel

Clean Truck Check tester in Nipomo, CA (San Luis Obispo 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 | 225 N Oak Glen Ave, Nipomo, CA 93444 |
| County | San Luis Obispo County |
| Phone | (805) 266-0253 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Pacific Coast 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 | 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 Auto-IQ in Santa Maria, about 6 miles away. [See listing](https://ctcfinder.com/tester/auto-iq-santa-maria/).

## Clean Truck Check testers in San Luis Obispo County

Pacific Coast Diesel is one of 25 testing businesses in San Luis Obispo County on CARB's public tester list. 22 of them offer mobile testing and 9 do smoke opacity tests. In Nipomo itself there are 3 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 Pacific Coast Diesel offer mobile Clean Truck Check testing?

Yes. Pacific Coast 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 Pacific Coast Diesel test a 2012 or older diesel truck?

Pacific Coast Diesel does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Auto-IQ](https://ctcfinder.com/tester/auto-iq-santa-maria/) (about 6 miles). Trucks from 2013 on get an OBD scan instead.

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

Pacific Coast Diesel has not published prices with us; call (805) 266-0253 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 Pacific Coast Diesel a CARB-credentialed tester?

Pacific Coast 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

- **[Christian Garcia Mendoza](https://ctcfinder.com/tester/christian-garcia-mendoza-nipomo/)** — Nipomo, CA 93444 — (805) 631-6334 — 1 mi. Services: mobile testing, OBD testing.
- **[Troesh Recycling (Tester)](https://ctcfinder.com/tester/troesh-recycling-tester-nipomo/)** — 2280 Hutton Rd, Nipomo, CA 93444 — (805) 357-2288 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Auto-IQ](https://ctcfinder.com/tester/auto-iq-santa-maria/)** — 504 S Western Ave Suite A, Santa Maria, CA 93458 — (805) 878-8056 — 6 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[Central City Truck and Trailer Parts](https://ctcfinder.com/tester/central-city-truck-and-trailer-parts-santa-maria/)** — 1912 S Olympia Dr, Santa Maria, CA 93458 — (805) 266-8050 — 6 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Cesar Ponce](https://ctcfinder.com/tester/cesar-ponce-santa-maria/)** — Santa Maria, CA 93458 — (805) 290-3907 — 6 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[PG CTC Testing](https://ctcfinder.com/tester/pg-ctc-testing-santa-maria/)** — 232 W Taft St, Santa Maria, CA 93458 — (805) 324-0829 — 6 mi. Services: mobile testing, OBD testing, motorhome testing.