---
title: "Standby Truck Testing — Clean Truck Check, Simi Valley, CA"
description: "Standby Truck Testing in Simi Valley, 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/standby-truck-testing-simi-valley/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Standby Truck Testing

Clean Truck Check tester in Simi Valley, CA (Ventura 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 | 841 Greenbriar Ave, Simi Valley, CA 93065 |
| County | Ventura County |
| Phone | (805) 625-4872 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Standby Truck Testing 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 Juans Truck Smog in Simi Valley, about 1 mile away. [See listing](https://ctcfinder.com/tester/juans-truck-smog-simi-valley/).

## Clean Truck Check testers in Ventura County

Standby Truck Testing is one of 68 testing businesses in Ventura County on CARB's public tester list. 61 of them offer mobile testing and 21 do smoke opacity tests. In Simi Valley itself there are 8 listed businesses, 8 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 Standby Truck Testing offer mobile Clean Truck Check testing?

Yes. Standby Truck Testing 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 Standby Truck Testing test a 2012 or older diesel truck?

Standby Truck Testing does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Juans Truck Smog](https://ctcfinder.com/tester/juans-truck-smog-simi-valley/) (about 1 mile). Trucks from 2013 on get an OBD scan instead.

### How much does Standby Truck Testing charge for a Clean Truck Check?

Standby Truck Testing has not published prices with us; call (805) 625-4872 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 Standby Truck Testing a CARB-credentialed tester?

Standby Truck Testing 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

- **[A1 Emissions](https://ctcfinder.com/tester/a1-emissions-simi-valley/)** — 1933 3rd St, Simi Valley, CA 93065 — (805) 857-1085 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Juans Truck Smog](https://ctcfinder.com/tester/juans-truck-smog-simi-valley/)** — 679 E Easy St, Simi Valley, CA 93065 — (442) 322-0055 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[KC Truck Smog](https://ctcfinder.com/tester/kc-truck-smog-simi-valley/)** — 939 Talbert Ave, Simi Valley, CA 93065 — (805) 404-8842 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Simi Smog Doc](https://ctcfinder.com/tester/simi-smog-doc-simi-valley/)** — 1382 E Los Angeles Ave Suite C, Simi Valley, CA 93065 — (805) 509-3143 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Truck/motorhome CTC](https://ctcfinder.com/tester/truck-motorhome-ctc-simi-valley/)** — 679 E Easy St, Simi Valley, CA 93065 — (805) 638-3911 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Michael Gil](https://ctcfinder.com/tester/michael-gil-thousand-oaks/)** — Thousand Oaks, CA 91362 — (424) 373-2726 — 6 mi. Services: mobile testing, OBD testing.