---
title: "ENS Bus & Truck Check — Clean Truck Check, Monterey Park, CA"
description: "ENS Bus & Truck Check in Monterey Park, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address…"
url: "https://ctcfinder.com/tester/ens-bus-and-truck-check-monterey-park/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# ENS Bus & Truck Check

Clean Truck Check tester in Monterey Park, 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 | 470 Grandeza Street, Monterey Park, CA 91754 |
| County | Los Angeles County |
| Phone | (626) 481-5317 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks ENS Bus & Truck Check 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 CTC Mobile Tester in Alhambra, about 2 miles away. [See listing](https://ctcfinder.com/tester/ctc-mobile-tester-alhambra/).

## Clean Truck Check testers in Los Angeles County

ENS Bus & Truck Check 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 Monterey Park 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 ENS Bus & Truck Check offer mobile Clean Truck Check testing?

Yes. ENS Bus & Truck Check 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 ENS Bus & Truck Check test a 2012 or older diesel truck?

ENS Bus & Truck Check does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [CTC Mobile Tester](https://ctcfinder.com/tester/ctc-mobile-tester-alhambra/) (about 2 miles). Trucks from 2013 on get an OBD scan instead.

### How much does ENS Bus & Truck Check charge for a Clean Truck Check?

ENS Bus & Truck Check has not published prices with us; call (626) 481-5317 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 ENS Bus & Truck Check a CARB-credentialed tester?

ENS Bus & Truck Check 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

- **[SKY Smog and Test Only](https://ctcfinder.com/tester/sky-smog-and-test-only-monterey-park/)** — 705 Monterey Pass Rd Suite C, Monterey Park, CA 91754 — (323) 262-9093 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Zaw Moe](https://ctcfinder.com/tester/zaw-moe-monterey-park/)** — Monterey Park, CA 91754 — (626) 877-2230 — 1 mi. Services: mobile testing, OBD testing.
- **[CTC Mobile Tester](https://ctcfinder.com/tester/ctc-mobile-tester-alhambra/)** — 1325 Elm St, Alhambra, CA 91803 — (626) 313-6409 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Robert Araujo](https://ctcfinder.com/tester/robert-araujo-alhambra/)** — Alhambra, CA 91803 — (323) 271-2565 — 2 mi. Services: mobile testing.
- **[Ty Trang](https://ctcfinder.com/tester/ty-trang-alhambra/)** — Alhambra, CA 91803 — (323) 786-2681 — 2 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[A&G Safety Alliance](https://ctcfinder.com/tester/a-and-g-safety-alliance-los-angeles/)** — 951 South Ford Boulevard, Los Angeles, CA 90022 — (562) 572-6969 — 2 mi. Services: mobile testing, OBD testing, motorhome testing.