Testing frequency increases for many fleets — check your CTC-VIS deadline
California CARB Clean Truck Check · Statewide

Clean Truck Check,
done for you.

The CC40 plugs into your eligible truck and tests automatically — filing results with CARB over built-in cellular. Prefer we come to you? We do on-site mobile testing statewide. Either way, the deadline you always forget becomes one you never think about.

Explore the CC40 Book Mobile Testing
4,000+Tests completed
20+Years in emissions
CredentialedCARB tester
5.0★59 Google reviews
Call and you reach an experienced Clean Truck Check professional — English or Spanish. No call center, no runaround.
CC40 · Live MODEL CC40
The CC40 automatic Clean Truck Check device with its cable and connectors CC40
No testing appointments to schedule
Two ways to stay compliant

Pick the path that fits your fleet

Automatic device testing or on-site mobile testing — both keep you CARB-compliant, both handled by the same team that answers the phone.

Automatic · hands-off

CC40 Automatic Testing

A device that plugs into your eligible truck and tests on its own — no appointments, no driver involvement, results submitted to CARB automatically. Set it once, forget the deadline.

  • Best for fleets that want zero scheduling
  • Built-in cellular — no Wi-Fi, no app
  • $299/yr per truck — $259 promotional, everything included
See how the CC40 works →
We come to you

Mobile Testing

We bring CARB Clean Truck Check testing to your yard, statewide. One visit clears multiple trucks — no downtime driving to a shop, no waiting rooms, results filed for you.

  • Best for mixed fleets & one-time testing
  • We travel to your location, north & south CA
  • Volume pricing — more trucks, lower per-truck
See mobile testing →
Not sure which fits? Call 530-378-9111 — we'll tell you straight, often both.
Why this matters

Missing a deadline can put your registration on hold

Noncompliance with Clean Truck Check can lead to CARB enforcement action and California DMV registration holds — and can interfere with fleet operations, customer requirements, and access to certain facilities.

DMV

Registration holds can follow noncompliance with the program.

Roadside

CARB uses roadside screening and can issue a Notice to Submit to Testing.

4×/yr

OBD testing increases to quarterly starting October 2027 — double today.

Staying ahead of it is far easier than catching up. See how the CC40 handles it →
Before you hand anyone your VINs

Don't take our word for it. Check it.

We tell fleets to verify their own deadlines in CTC-VIS rather than trust a vendor. Same standard applies to us — the credential, the LLC, the reviews, and the things we can't prove and won't pretend to.

See every claim and how to check it

Built for the fleets that run on diesel

Who we keep compliant

Trucking & Freight
Construction & Excavation
Concrete & Aggregate
Dump & Haul
Pipeline & Utility
Owner-Operators
Questions fleets ask

Straight answers

Does my truck need Clean Truck Check testing?+
Most heavy-duty vehicles over 14,000 pounds GVWR operating in California are covered. The reliable answer for your specific truck is in the CTC-VIS portal — send us your VINs and we'll walk through it with you.
What's the difference between mobile testing and the CC40?+
Mobile testing is a person: a credentialed tester comes to your location and performs the test. The CC40 is a device: it stays plugged into one specific truck and tests itself when the vehicle is ready. Mobile works on any covered vehicle; the CC40 only works on OBD-eligible ones.
How do I check my deadline?+
Your compliance dates are in CARB's CTC-VIS portal. If you'd rather not dig through it, send us your VIN list and we'll tell you what's due and when.
Does a passing test automatically clear DMV issues?+
A passing Clean Truck Check test is a Clean Truck Check test. It doesn't resolve unrelated DMV registration holds, other program requirements, or anything else on the vehicle's record. If you have a hold, check what's driving it before assuming a test clears it.
Let's talk about your fleet

One call sorts your whole yard

Tell us what you're running — years, VINs, how many. We'll tell you what's due, which trucks the CC40 covers, which need us on site, and what it costs. No obligation, no pressure.

1You tell us what you're running
2We check what's due and what each truck needs
3You get a straight price before you commit
530-378-9111
Danny Barbosa, owner · English & Spanish
Call Us Now Request a Callback
Or email danny@aplusctc.com
Don't let a deadline sneak up

Get CARB deadline reminders by email

Drop your email and we'll send compliance heads-ups and let you know when we're testing in your area — so a missed test never puts your registration on hold. English or Spanish. No spam, unsubscribe anytime.

Prefer to talk? Call 530-378-9111
Your compliance is our priority — 530-378-9111
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